Why the inductive and mathematical sciences, after their first rapid development at the culmination of Greek civilization, advanced so slowly for two thousand years—and why in the following two hundred years a knowledge of natural and mathematical science has accumulated, which so vastly exceeds all that was previously known that these sciences may be justly regarded as the products of our own times—are questions which have interested the modern philosopher not less than the objects with which these sciences are more immediately conversant. Was it the employment of a new method of research, or in the exercise of greater virtue in the use of the old methods, that this singular modern phenomenon had its origin? Was the long period one of arrested development, and is the modern era one of normal growth? Or should we ascribe the characteristics of both periods to so-called historical accidents—to the influence of conjunctions in circumstances of which no explanation is possible, save in the omnipotence and wisdom of a guiding Providence?
The explanation which has become commonplace, that the ancients employed deduction chiefly in their scientific inquiries, while the moderns employ induction, proves to be too narrow, and fails upon close examination to point with sufficient distinctness the contrast that is evident between ancient and modern scientific doctrines and inquiries. For all knowledge is founded on observation, and proceeds from this by analysis, by synthesis and analysis, by induction and deduction, and if possible by verification, or by new appeals to observation under the guidance of deduction—by steps which are indeed correlative parts of one method; and the ancient sciences afford examples of every one of these methods, or parts of one method, which have been generalized from the examples of science.
A failure to employ or to employ adequately any one of these partial methods, an imperfection in the arts and resources of observation and experiment, carelessness in observation, neglect of relevant facts, by appeal to experiment and observation—these are the faults which cause all failures to ascertain truth, whether among the ancients or the moderns; but this statement does not explain why the modern is possessed of a greater virtue, and by what means he attained his superiority. Much less does it explain the sudden growth of science in recent times.
The attempt to discover the explanation of this phenomenon in the antithesis of “facts” and “theories” or “facts” and “ideas”—in the neglect among the ancients of the former, and their too exclusive attention to the latter—proves also to be too narrow, as well as open to the charge of vagueness. For in the first place, the antithesis is not complete. Facts and theories are not coordinate species. Theories, if true, are facts—a particular class of facts indeed, generally complex, and if a logical connection subsists between their constituents, have all the positive attributes of theories.
Nevertheless, this distinction, however inadequate it may be to explain the source of true method in science, is well founded, and connotes an important character in true method. A fact is a proposition of simple. A theory, on the other hand, if true has all the characteristics of a fact, except that its verification is possible only by indirect, remote, and difficult means. To convert theories into facts is to add simple verification, and the theory thus acquires the full characteristics of a fact.
小題1:     The title that best expresses the ideas of this passage is
[A]. Philosophy of mathematics.              [B]. The Recent Growth in Science.
[C]. The Verification of Facts.                [C]. Methods of Scientific Inquiry.
小題2:According to the author, one possible reason for the growth of science during the days of the ancient Greeks and in modern times is
[A]. the similarity between the two periods.
[B]. that it was an act of God.
[C]. that both tried to develop the inductive method.
[D]. due to the decline of the deductive method.
小題3:     The difference between “fact” and “theory”
[A]. is that the latter needs confirmation.
[B]. rests on the simplicity of the former.
[C]. is the difference between the modern scientists and the ancient Greeks.
[D]. helps us to understand the deductive method.
小題4:     According to the author, mathematics is
[A]. an inductive science.           [B]. in need of simple verification.
[C]. a deductive science.            [D]. based on fact and theory.
小題5:     The statement “Theories are facts” may be called.
[A]. a metaphor.                  [B]. a paradox.
[C]. an appraisal of the inductive and deductive methods.
[D]. a pun.

小題1:D
小題2:B
小題3:A
小題4:C
小題5:B

小題1:科學(xué)研究/探索的方法。文章一開(kāi)始就提出問(wèn)題,為什么從希臘文化頂峰時(shí)期后兩千年來(lái)歸納法和數(shù)學(xué)科學(xué)發(fā)展如此緩慢,而后的兩百年又超越了前人,是應(yīng)用新,舊方法關(guān)系還是其它(見(jiàn)難句譯注1,2)。第二段講埃及古代在科學(xué)探索中運(yùn)用了演繹推理法,而現(xiàn)在應(yīng)用了歸納法。這種解釋太狹隘,經(jīng)仔細(xì)審核,難以很清晰地點(diǎn)明古代和現(xiàn)代科學(xué)教義和探究上明顯的差別。因?yàn)橐磺兄R(shí)都基于觀察,通過(guò)分析,綜合,或綜合分析,歸納演繹推理,有可能的話(huà),經(jīng)過(guò)校正或經(jīng)由演繹指導(dǎo)下再觀察而向前推進(jìn)。第三段進(jìn)一步闡明不用這些方法觀察,實(shí)驗(yàn);忽略相關(guān)事實(shí),推理不慎;不能答出理論的結(jié)論,再用實(shí)驗(yàn)或觀察來(lái)檢驗(yàn)等或用得不全,不論在古代還是現(xiàn)代都會(huì)失敗。但這不能說(shuō)明為什么現(xiàn)代科學(xué)具有較高的功效,通過(guò)什么方式方法,超越了前人,更不用說(shuō)說(shuō)明最近科學(xué)突飛猛進(jìn)的原因。第四,五段涉及事實(shí)和理論的關(guān)系。
A. 數(shù)學(xué)的哲學(xué),文內(nèi)沒(méi)有提。        B. 近來(lái)科學(xué)的發(fā)展。       C. 事實(shí)的驗(yàn)證,只是最后兩段提及驗(yàn)證方法之作用。
小題2:B. 是上天的安排,這是作家在用方法論等失敗后得出的結(jié)論。見(jiàn)難句譯注4,第一段最后一句話(huà)。
A. 兩個(gè)階段的相似性。      . 兩者都試圖應(yīng)用歸納法。      D. 由于演繹法的衰落。
小題3:A. 后者需要證實(shí)。答案在第四,五段,死段試圖在事實(shí)的對(duì)立面和理論,或事實(shí)和思想中發(fā)現(xiàn)上述現(xiàn)象的解釋看起來(lái)有餓太狹隘,也會(huì)因模糊不清遭批評(píng)。因?yàn),?duì)立面不全面,事實(shí)和理論不是同類(lèi)的事物。理論,如果是真正的理論,就是事實(shí)——一種特殊類(lèi)別的事實(shí),一般復(fù)雜,但仍是事實(shí)。而事實(shí),從詞的狹義來(lái)說(shuō),如果很復(fù)雜,如果各成分中存在著邏輯的聯(lián)系,就具有理論的一切主要特征。第五段第二句,事實(shí)是一個(gè)提議,通過(guò)運(yùn)用知識(shí)的源泉和經(jīng)驗(yàn)而證實(shí)的提議直接而又簡(jiǎn)單。而理論,若是真理論,就有事實(shí)的一切特性(除非其證實(shí)只能通過(guò)非直接的,遙遠(yuǎn)的和困難的方式方法),把理論轉(zhuǎn)成事實(shí)必須用簡(jiǎn)單的核實(shí),理論因此具有事實(shí)的一切特性。
B. 前者簡(jiǎn)單。         C. 是現(xiàn)代科學(xué)家和古希臘的差異。         D. 幫助我們了解演繹法,三項(xiàng)都不對(duì)。
小題4:C. 是推理演繹科學(xué),這個(gè)問(wèn)題常識(shí)就能回答。
A. 歸納法科學(xué)。        B. 需要簡(jiǎn)單證實(shí)。           D. 基于事實(shí)和理論。
小題5:     B. 是一個(gè)悖論,見(jiàn)第四,五段注釋。
A. 比喻。      C. 對(duì)歸納法和演繹法的贊揚(yáng)。        D. 雙關(guān)語(yǔ)。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Speakers of different languages not only describe the world differently but think about it differently too, according to a new study.
Researchers used a cartoon cat Sylvester to study how language was reflected (反映) in the gestures people made. Dr. Sotaro Kita of the University of Bristol’s Department of Experimental Psychology (心理學(xué)), showed the cartoon to a group of native English, Japanese and Turkish speakers and then watched their gestures as they described the actions they had seen. He found speakers of the three different languages used different gestures to describe the same event, which appeared to reflect the way the structure of their languages expressed that event. For example, when describing a scene where the cat swings on a rope, the English speakers used gestures showing an arc trajectory (弧形軌跡)  and the Japanese and Turkish speakers tended to use straight gestures showing the motion but not the arc.
Dr. Kita suggests this is because Japanese and Turkish have no proper verb to express the English meaning “to swing”. While English speakers use the arc gesture as their language can readily express the change of location and the arc-shaped trajectory, Japanese and Turkish speakers cannot as easily express the idea of movement with an arc trajectory so they use the straight gesture.
Dr. Kita said, “My research suggests that speakers of different languages cause different spatial (空間的) images of the same event in a way that matches the expressive possibilities of their own languages. In other words, language influences (影響) spatial thinking at the moment of speaking.”
68. 小題1:Researchers watched the gestures the people made because they wanted to know _____.
A.how language was reflected
B.whether they could express the same idea
C.whether they could describe what they had seen
D.how the structure of language changed
69. 小題2:After watching the gestures of speakers of the three different languages, Dr. Kita concluded that _____.
A.Japanese and Turkish people couldn’t express the meaning of “swing”
B.English was obviously better than Japanese and Turkish
C.no word in Japanese and Turkish could express some ideas of English
D.every language had its own special way to describe things
70.小題3:What is mainly discussed in the text?
A.Differences between languages.
B.Differences between gestures.
C.How people use different gestures to express the same event.
D.That language influences the way people think.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Parents often believe that they have a good relationship with their teenagers. But last summer, Joanna and Henry noticed a change in their older son, suddenly he seemed to be talking far more to his friends than to his parents. “The door to his room is always shut,” Joanna noted.?
Tina and Mark noticed similar changes in their 14-year-old daughter. “She used to cuddle up(蜷伏) with me on the soft and talk,” said Mark.“Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a young lady. The problem is figuring out which time is which.”?
Before age 11, children like to tell their parents what's on their minds.“In fact, parents are first on the list,” said Michael Riera, author of Uncommon Sense for Parents with Teenagers?.“This completely changes during the teen years.” Riera explained.“They talk to their friends first, then maybe their teachers, and their parents last.”?
Parents who know what's going on in their teenagers' lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break, for children also need freedom, though young.?Another? thing parents should remember is that to be friend, not a manager, with their children is a better way to know them.
小題1:“The door to his room is always shut” suggests that the son_______.?
A.is always busy with his studies
B.doesn't want to be disturbed?
C.keeps himself away from his parents
D.begins to dislike his parents?
小題2:What troubles Tina and Mark most is that _______.
A.their daughter isn't as lovely as before?
B.they can't read their daughter's mind exactly?
C.they don't know what to say to their daughter?
D.their daughter talks with them only when she needs help?
小題3:Which of the following best explains “the wall of silence” in the last paragraph?
A.Teenagers talk a lot with their friends.?
B.Teenagers do not want to understand their parents.?
C.Teenagers do not talk much with their parents.?
D.Teenagers talk little about their own lives.?
小題4:What can be learned from the passage?
A.Parents are unhappy with their growing children.?
B.Parents have suitable ways to talk with their teenagers.?
C.Parents should be patient with their silent teenagers.?
D.Parents should try to understand their teenagers.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Comera is the only place in the world which has a whistle language. We do not know how and why it began because we do not know the complete history of the island. But we can certainly imagine the reasons for the beginning of the whistle language. There are many deep valleys on the island. A person on one side of valley can not easily shout to a person on the other side. But he can whistle and be heard from four miles away, and the record is seven miles. The people who live on the island usually have good teeth, and this helps them to whistle well. They must also have good ears so that they can hear other whistlers.
We can understand why the whistle language continues. It is very useful on the island, and quite easy to learn. When somebody is hurt or ill, the whistle language takes the place of telephone. If the sick person is a long way from the town, boys and men pass the news from one to another. A boy guarding cattle on a hillside whistles to a man fishing from his boat. The last one is able to describe the trouble fully and exactly to the doctor in town. People help each other in the same way when a car breaks or a cow is lost.
The whistle language is hundreds of years old, and probably it will continue to live for hundreds of years more. Radio and TV often kill the special ways of speaking in the different parts of a country. But on Comera you are nobody if you cannot whistle. Perhaps soon after TV arrives on the island, the people there will be whistling the news and other facts and opinions.
4. 小題1:If a person on Comera island is ill,      .
A.others will phone the doctor in town
B.whistle language will pass the news to the doctor
C.his family will take him to the doctor
D.people will take him to the hospital
5. 小題2:From the passage we know radio and TV       at that time.
A.killed the special way of speaking
B.whistled all the news and opinions
C.helped Comera people to communicate
D.did not appear on Comera island yet
6. 小題3:Comera island is special in that      .
A.it attracts visitors every year
B.no visitors have ever been there
C.people there have special ears to hear whistles
D.people there use the whistle language to communicate with each other
7. 小題4:Which of the following is not true according to the passage?
A.It is not easy for a person to live on Comera island if he cannot whistle.
B.The whistle language can only be found in Comera.
C.The whistle language has been used for hundreds of years on the island, but will not be used any longer.
D.The record shows that one best whistler can be heard by others seven miles away.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Pierre is a 25-year-old penguin at the California Academy of Sciences. Due to his old age, he was going bald, which made him feel too cold to swim in the pool. Therefore, biologists at the academy had a wetsuit created for this penguin to help him get back in the swimming pool.

Unlike marine mammals, which have a layer of blubber to keep them warm, penguins depend on their waterproof feathers. Without them, Pierre was unwilling to jump into the swimming pool and ended up trembling on the side of the pool while his 19 peers played in the water.
"He was cold; he would shake," said Pam Schaller, a senior biologist. Schaller first tried a heat lamp to keep Pierre warm. Then she got another idea: if wetsuits keep humans warm in the cold Pacific, why not make one for Pierre?
Schaller designed the suit, which covered Pierre’s body and had small openings for his flippers.
"I would walk behind him and look at where there were any gaps, and cut and refit and cut and refit until it looked like it was extremely suitable," she said.
One concern was that the other penguins would reject Pierre in his new suit, but in fact, they accepted his new look. He swam freely and got along with others well, although he was the only penguin with a black stomach.
Schaller couldn’t say for sure whether the wetsuit allowed Pierre to recover his fine feathers, but "certainly we were able to keep him comfortable during a period of time that would have been very difficult for him to stay comfortable".
Pierre will take off his suit after his new feathers grow back.
小題1: Pierre felt too cold to swim in the pool because of _____.
A.not having a layer of blubberB.having few feathers due to old age
C.having no wetsuitD.others penguins rejecting him
小題2:The idea of making a wetsuit for Pierre came from _____.
A.total inventionB.the use of wetsuit on humans
C.the use of heat lampD.waterproof feathers
小題3: Schaller followed Pierre in order to see _____.
A.whether other penguins would reject him
B.if anywhere of wetsuit needed to be cut and refit
C.if the wetsuit kept warm
D.whether the wetsuit would keep the feathers from recovering
小題4:What does the underlined word in the second paragraph mean?
A.feeling scaredB.staying aloneC.shaking with coldD.keeping warm
小題5:The best title of the passage is _____.
A.Wetsuit for An Old PenguinB.Old Penguin Getting Bald
C.Unwilling to SwimD.Strange Look of Pierre

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

Industrial pollution is not only a problem for the countries of Europe and North America but also an extremely serious problem in some developing countries. For these countries, economic growth is a very important aim. They want to introduce industries, and so they put few controls on the industries which cause pollution.
Cubatao, an industrial town of 85 000 people in Brazil, is an example of the connection between industrial development and pollution. In 1954, Cubatao had no industry. Today it has more than twenty large factories, which produce many pollutants(污染物). The people of the town are suffering from the poisonous matter in their environment and the bad effects can be clearly seen. Birth shortcomings are extremely common. Among children and adults, lung problems are sometimes twelve times more common in Cubatao than in other places.
It is true that Brazil, like many other countries, has laws against pollution, but these laws are not enforced strictly enough. It is cheaper for companies to take no notice of the laws and pay the fines(罰款) than to buy the expensive equipment that will reduce the pollution. It is clear, therefore, that economic growth is more important to the government than to the health of the workers. However, the responsibility(責(zé)任) does not completely lie with the Brazilian government. The example of Cubatao shows that international companies are not acting in a responsible way either. A number of the factories in the town are owned by large companies from France, Italy, and the U. S. They are doing things in Brazil that they would not be able to do at home. If they caused the same amount of pollution at home, they would be severely(嚴(yán)厲地) punished or even put out of business.
小題1:Why don’t developing countries have strict pollution controls?
A.The new industries they want to introduce do not cause much pollution.
B.Pollution is not a serious problem for developing countries.
C.They don’t realize the balance of nature will be destroyed by some pollutants.
D.If they put stricter controls on industry, fewer companies would build new plants in developing countries.
小題2:What is the author’s purpose in taking Cubatao as an example?
A.To show that industry can develop very fast in developing countries.
B.To show that the pollution problem in Brazil is extremely serious.
C.To show that industrial growth can cause pollution problems for developing countries.
D.To show that pollution is killing many people and destroying the whole economy of Brazil.
小題3: How is the health of the population of Cubatao?
A.There are more heart diseases among people who live near chemical factories.
B.More people suffer from lung diseases because of poisonous matter.
C.Their health is affected by pollutants the same way as that of other Brazilians.
D.Babies there are found not as bright as those who live in other places.
小題4:Why do some foreign companies like to set up their plants in Brazil?
A.The investment(投資) environment in Brazil is suitable for them.
B.They will not be severely punished if they cause pollution in Brazil.
C.They can make much money because they do not have to pay Brazilian workers much.
D.They can act in an irresponsible(不負(fù)責(zé)任的) way in Brazil because there are no pollution laws there.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

With the start of the new semester students around the country exchange their fun and fashionable clothes for boring school uniforms.
"The uniform makes us look like a bunch of clones, especially when we are doing morning exercises in the playground, "said Qing, a Senior 2 from a high school in Shanghai. "But we are not exactly the same from the top to the bottom. The boys wear different sport shoes and girls have different decorations ( 裝飾品 )in their hair. These are the areas where you can express yourself" said Qing.
Although it might be strange for boys to talk about fashion, they do care about what they wear in school, especially shoes, according to Qing.
"Nike and Adidas basketball shoes, although they are still the must for many of my friends ,are becoming out-of-date,” added. He explained, "Since Liu Xiang ran so fast in Athens, running shoes are becoming popular in this autumn."
"Still in fashion are the various baseball caps and American-style T-shirts with random English words printed on them, "said Qing. "The accuracy ( 準(zhǔn)確性 )of the written message isn't important. Often, the words are misspelt . Sometimes they do not even make sense “ Qing said with a smile.
Besides sports shoes and T-shirts, styles and colours of school bags are another opportunity for students to express their taste in fashion. Some bags are made more eye-catching by decorating them with small hanging dolls. Other fashionable items are the colourful drink contains which are now popular among girls this semester.
As in China, the new semester in the US also brings new fashion trends: shirts printed with Chinese words, necklaces with Hebrew ( 希伯萊 )or Hindi ( 印度的 )characters, and Brazilian jewelry, are all common in schools in Florida, according to Carmen Domingues, a high school student.
小題1:What does "a bunch of  clones”( Paragraph 2)mean?
A.All of the clothes are the same.B.All of the exercises are the same.
C.All of the clothes are different.D.All of the exercises are different.
小題2:How do the students express themselves in school?
A.The girls wear different sport shoes.
B.All the students wear school uniforms.
C.The girls have different decorations in their hair.
D.The boys drink water from colourful drinks containers.
小題3:Why are Nike and Adidas basketball shoes becoming out-of-date?
A.Because the shoes are not eye-catching.
B.Because running shoes become more popular.
C.Because the shoes have been popular for a long time.
D.Because they have changed their opinions for Liu Xiang.
小題4:Which of the following is NOT the new fashion trends in the US?
A.Necklace with Hebrew or Hindi characters.
B.Baseball caps and American-style T-shirts.
C.Shirts printed with Chinese words.
D.Brazilian jewelry.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

The Baima is a minority group of about 1,400 people. They have lived in Northern Sichuan and Southern Gansu Provinces for centuries. They have long depended on the forests as their main source of income. But since a ban on cutting down forests was introduced in the late 1990s to fight yearly flooding, the villagers have had to look for other means of earning a living.
Several are now in the process of developing a small tourism industry as their lands are rich in forests and natural scenery and are the home of the giant pandas. Xiangshujia, in particular, is becoming a popular bed and breakfast centre for tourists heading to Wanglang to see the giant pandas. Visitors are also starting to take notice of the Baima people themselves.
As our jeep stopped in the courtyard of a house, we were greeted by the village leader Li Qin and young Baima girls dressed in traditional costumes with white feathers in their hair. As we took our places on wooden benches near an open fire, the girls began to sing traditional songs as they served us.
“The number of tourists is growing,” said Li Qin. “We realize that to attract visitors we have to show our culture by offering more traditional singing and dancing and ensuring our houses are built in the traditional way.”
Relations between the Baima people and the reserve were once tense following the ban on cutting down forests. Villagers had to make a new living. They entered the Wanglang Nature Reserve to collect wild mushrooms and herbs (藥草), often at the expense of disturbing the pandas’ habitat. But things greatly improved as villagers started receiving training in how to sell things to tourists.
“Our aim was to deter the villagers, because they often disturbed the pandas’ habitat, and to ensure they could have a long-lasting means of earning a living,” emphasized Chen Youping, director of the Wanglang Nature Reserve. “All the money from the reserve goes back into the community and conservation projects,” said Chen. “We take into consideration first the animals and then tourism.”
小題1:From Paragraph 1 we learn that ________.
A.the Baima has the longest history among all the minority groups in China
B.the Baima people live in most areas of Sichuan and Gansu Provinces
C.forests are the main source of firewood for the Baima people
D.in order to fight floods, the Baima people are forbidden to cut down forests
小題2: We can infer that the Baima girls wore their traditional costumes to greet visitors mainly because _______.
A.they wanted to look more beautiful
B.their leader Li Qin asked them to do so
C.it was a way to show their culture to attract visitors
D.it was necessary before they sang traditional songs
小題3:Which of the following was NOT an effect of the ban on cutting down forests?
A.The Baima people had a tense relationship with the reserve.
B.Villagers had to look for other means of making a living.
C.The pandas’ habitat was often disturbed by villagers.
D.Villagers stopped selling things to tourists.
小題4:The underlined word “deter” in the last paragraph can be replaced by “________”.
A.punishB.stopC.encourageD.threaten

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源:不詳 題型:閱讀理解

We do not know exactly how many whales there are in the sea because we can’t count them. But we believe at the beginning of the eighteenth century there were 105,000 humpback whales and 120,000 right whales. At the beginning of the twentieth century there were 75,000 humpbacks and 80,000 rights.
Since 1900 their numbers have fallen very quickly. Between 1935 and 1950 the number of humpbacks fell from 20,000 to 10,000 and since 1950 the number has fallen to only 6,000. The number of right whales has fallen even faster. In 1935 there were 25,000. The number fell to 6,000 in 1950 and since 1950 the number has fallen to 4,000. Men have always been hunters. Thousands of whales have become victims(犧牲品). It’s time to do something to protect whales.
小題1:Which of the following is true?
A.We know the exact number of whales in the sea.
B.It’s easy for us to count whales in the sea.
C.We find it impossible to count whales in the sea.
D.We don’t want to know how many whales there are in the sea.
小題2:The number of right whales has fallen _______.
A.more slowly than that of humpback whales
B.faster than that of humpback whales
C.a(chǎn)s slowly as that of humpback whales
D.a(chǎn)s fast as that of humpback whales
小題3:The passage is mainly about _______.
A.the number of humpback whales
B.the number of right whales
C.hunting whales
D.the necessity of protecting whales

查看答案和解析>>

同步練習(xí)冊(cè)答案