“Around 500,000 years ago, at the Peking Man Site at Zhoukoudian in Beijing’s suburban Fangshan district, which is about 50 km from the city of Beijing, there lived early human beings,” says a China history textbook.
The textbook now has to be revised. New dating techniques suggest the remains of Peking Man--- found in the 1920s---are over 200,000 years older than previously thought. What’s important about that date, about 770,000 ago, is that this was an ice age on Earth.
Over Earth’s long history, there have been a number of times when ice and snow covered a large part of its surface. Such periods are known as ice ages.
Earth is in an ice age now. It started about 2 million years ago. Despite the many warm periods since then, scientists regard the whole time as one ice age because of the continuous existence of at least one large ice sheet---the one over Antarctica.
The new discovery was made by Chinese and US scientists. It suggests Peking Man is probably our oldest cold weather human being, said Darryl Granger, an atmospheric scientist at Purdue University whose research appears in Thursday’s edition of the journal Nature.
The average yearly temperature at the time in that part of China was around the freezing mark, but it was too dry for an ice sheet, Granger said.
This raises a question. How did Peking Man survive the cold weather?
Rick Potts, a Smithsonian Institution human origins expert who wasn’t involved in the research, raised three possibilities:
First, fire. Early findings showed signs of a fire in Peking Man’s cave. But there has been debate about whether the fire was accidental or controlled.
Second, fur. There is no evidence that Peking Man used simple tools to make more form-fitting clothes, it’s more likely he wore animal fur.
Lastly, he may have developed gradually to handle the cold. Peking Man may have experienced physiological changes that allowed more blood to flow to his hands and legs, Potts said. “People in general who live in colder climates tend to be shorter and wider,” he explained.
Unlike the times of Peking Man today the global temperature is rising due to the greenhouse effect. In the future, could humans develop to handle the warmth just as Peking Man did to fight the cold?
72. According to the new research, Peking Man actually dates back to _______.
A. around 500,000 years ago            B. over 200,000 years
C. about 770,000 years ago             D. about 2 million years ago
73. What is the most important standard for scientists to decide an ice age?
A. The weather conditions.              B. The continuous existence of any large ice sheets.
C. The average yearly temperature        D. The long period of snowfall
74. Which of the following is true of Peking Man?
A. He is the oldest human being           B. He used fire to keep warm
C. He wore form-fitting clothes made from fur with simple tools.
D. He might have been shorter and wider than previously thought.
75. The following are all the possibilities EXCEPT _______ that the Peking Man survived the cold weather.
A. putting up tents to keep the cold out      B. wearing animal fur
C. using fire in their cave                 D. developing gradually to handle the cold.

小題1:C
小題2:B
小題3:D
小題4:A
         
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：閱讀理解

There is a brown female(母的) Canadian duck that weighs only four hundred fifty grams. The duck had flown to the southern state of Florida for the winter．A hunter shot it on January fifteenth and  took it to his home in the city of Tallahassee．He put it in the refrigerator(冰箱)．Two days later the man’s wife opened the refrigerator door．The duck lifted its head and looked at her．It was alive!
The family took the duck to a doctor who treats animals．The doctor gave the duck to the Goose Creek Animal Sanctuary(動物保護區(qū))．Animal sanctuaries provide homes for animals and teach people about their care．
The doctor said it was easy to understand why people thought the duck was dead. He said ducks generally do not move a 1ot，especially after being shot．And he said its low body temperature helped it survive in the refrigerator．
That was enough to make the duck famous around the world．The Tallahassee newspaper published the story that was re-printed in many different countries．But that was not the end of the story．
Workers at the wildlife sanctuary named the duck Perky．And they got the doctor to give an operation to repair the duck’s damaged wing．During the operation，Perky stopped breathing--not just once but two times．The doctor tried to save Perky by giving her oxygen．But he finally said the duck had died．A few seconds later, however, Perky began to move．Reports say the people in the operating room were so happy that they cried.
Workers at the wildlife sanctuary say Perky will not have any more operations. It seems the drugs that were used had side-effects on her．Perky is expected to live at the sanctuary．And a local company has begun to sell T-shirts showing a picture of the lucky duck. Money from the sale of the shirts will help pay for Perky’s care．
小題1:Which of the following statements is TRUE?
A．Animal sanctuaries are homes specially for wounded animals．
B．The hunter shot the duck in the wing．
C．Ducks do not move at all for the whole winter.
D．The hunter’s wife intended to free the duck in the refrigerator．
小題2:The underlined Word “That” in the fourth paragraph refers to the fact that______.
A．the duck survived the shot and the cold in the refrigerator
B．the hunter had saved the duck by freezing it
C．the hunter shot the duck from Canada
D．the Tallahassee newspaper published the story
小題3:The duck in the story______．
A．was big and strong
B．flew to Florida for food
C．stayed in the refrigerator to keep its body temperature low
D．was considered dead before being put in the refrigerator
小題4:What is the best title for the passage?
A．Save the DuckB．The Lucky DuckC．Stop Killing DucksD．The Poor Duck
小題5:It can be inferred from the passage that_______．
A．the local company will get large profits by selling the T-shirts
B．it was illegal for me hunter to shoot the duck
C．the duck is likely to be well cared for in the sanctuary
D．Perky likes Florida better than Canada

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Cloning is suggested as a means of bringing back a relative, usually a child, killed tragically. Some parents can understand that wish, but it must first be recognized that the copy would be a new baby and not the lost child. Here lies the difficulty, for the sad parents are seeking not a new baby but a return of the dead one. Since the original would be fondly remembered as having particular talents and interests, would not the parents expect the copy to be the same? It is possible, however, that the copy would develop quite differently. Is it fair to the new child to be placed in a family with such unnatural expectations?
Copying is also suggested as a means by which parents can have the child of their dreams. Couples might choose to have a copy of a film star, baseball player or scientist, depending on their interest. But because personality is only partly the result of genetic inheritance(遺傳), conflicts would be sure to arise if the cloned child failed to develop the same interests as the original. What if the copy of Einstein shows no interest in science? Or the baseball player turns to acting? Success also depends upon fortune. What if the child does not live up to the hopes and dreams of the parents simply because of bad luck?
Every child should be wanted for itself, as an individual. In making a copy of oneself or some famous person, a parent is deliberately（深思熟慮地） specifying(詳細說明) the way he or she wishes that child to develop. In recent years, particularly in the U.S., much importance has been placed on the right of individuals to reproduce in ways that they wish. So I suggest there is a greater need to consider the interests of the child and to reject these proposed uses of cloning.
40. What happens to parents in cloning a lost child?
A. Parents expect too much from the copy.
B. Parents may get a quite different copy.
C. Parents are sure to have an identical copy.
D. Parents lose the talents of the lost child.
41. What,  in  the  author’s  opinion,  affects  the success of parents’ dreams?
A. The cloned child’s interest in Einstein.
B. The cloned child’s natural talent.
C. The cloned child’s personality.
D. The efforts of the parents.
42. In the third paragraph, the author implies that ______.
A. the cloned child is viewed as independent
B. the right of growing in his own way is taken away from the cloned child
C. parents carefully protect the rights of the cloned child
D. parents are eager to wish the cloned child to be somebody.
43. In this passage, the author is mainly concerned about ______.            
A. the future of a cloned child
B. the possibility of cloning people
C. the importance of cloning a lost child
D. the problems of cloning life

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Yoga（瑜伽）is an ancient practice that helps create a sense of union in body, mind, and spirit. It brings us balance. After a long time of practice yoga, you no longer just practice it — you love it.
Yoga becomes part of your physical life. Your body grows stronger, more toned（有彈性的）, and more flexible as you move from one pose to another. I spent a week in Mexico at a yoga retreat, and it was the first vacation on which I lost weight. “Rather than building muscles, yoga builds muscle tone,” says Shakta Kaur Khalsa, author of KISS Guide to Yoga. “Because yoga helps maintain a balanced metabolism（新陳代謝）, and it also helps to control weight. Additionally, yoga stretches muscles lengthwise, causing fat around the cells disappear, thus losing weight.”
I do yoga poses throughout the day. After hours at my computer, I stretch my stiff shoulders and arms. When I need an increase in energy, I do energizing poses. When I am feeling exhausted at the end of the day, I do restorative（恢復體力的）poses.
Yoga becomes part of your mental life. Yoga teaches you to focus on breathing while you hold the poses. This attention to breath is calming; it dissolves（使消除）stress and anxiety. I use yogic breathing on the tennis court, in the dentist’s chair, and when I’m stuck in traffic.
You should always leave a yoga practice feeling energized, but not tired. If you feel tired after yoga, it means you spent the time “fighting” yourself, trying to force yourself into poses. In yoga, you “surrender” to the poses by letting go of the tension.
64. What will be talked about if this passage continues?
A. Yoga is becoming part of your spiritual life.
B. Yoga is becoming popular all over the world.
C. The disadvantages of yoga.
D. Encouraging people to do yoga.
65. According to the second paragraph, yoga can help people ___.
A. grow tall             B. lose weight C. be flexible in thinking     D. make friends
66. Why does a person feel tired after yoga?
A. Because when practicing yoga, people will consume a lot of energy.
B. Because he or she surrenders to the poses by letting go of the tension.
C. Because yoga doesn’t benefit all the people.
D. Because he or she doesn’t do yoga poses naturally.
67. What would be the best title for this passage?
A. What’s yoga?                                         B. How do I do yoga poses?
C. The benefits of yoga.                           C. The varieties of yoga.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


The Vienna-based researchers showed that dogs will stop doing a simple task when not rewarded if another dog, which continues to be rewarded, is present．
The experiment consisted of taking pairs of dogs and getting them to present a paw for a reward．On giving this “handshake” the dogs received a piece of food．One of the dogs was then asked to shake hands, but received no food．The other dog continued to get the food when it was asked to perform the task．
The dog without the reward quickly stopped doing the task, and showed signs of anger or stress when its partner was rewarded．
To make sure that the experiment was really showing the interaction between the dogs rather than just the frustration of not being rewarded, a similar experiment was conducted where the dogs performed the task without the partner．Here they continued to present the paw for much longer．
Dr Frederike Range from the University of Vienna says this shows that it was the presence of the rewarded partner that was the greater influence on their behaviour．
“The only difference is one gets food and the other doesn’t, they are responding to being unequally rewarded．” she said．
The researchers say this kind of behaviour, where one animal gets frustrated with what is happening with another, has only been observed in primates(靈長類) before．
Studies with various types of monkeys and chimpanzees show they react not only to seeing their partners receiving rewards when they are not, but also to the type of reward．
The dog study also looked at whether the type of reward made a difference．Dogs were given either bread or sausage, but seemed to react equally to either．Dr Range says this may be because they have been trained．
57．The dogs refused to give the paw when they_______．
A．found another dog was given nothing
B．felt they were not treated equally
C．were aware they received less food
D．were given too much reward
58．What would the dogs do if they presented their paw alone?
A．They would go on with the performance much longer．
B．They would be too shy to present their paw．
C．They would miss their partners．
D．They would compare what they got with that of others．
59．According to the passage, compared with dogs, monkeys and chimpanzees ______．
A．pay no attention to the type of reward
B．only like to play interesting games
C．pay attention to the type of reward as well as whether they are rewarded
D．care more about how they are rewarded
60．Which of the following can best summerise the passage?
A．Animals’ various ways to show anger
B．Dogs are more envious than man
C．Most animals want to be be rewarded for their work
D．Animals also have a sense of fairplay

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


“ONLY A COKE WILL DO”
“We don’t necessarily believe that new advertising, which might make consumers feel better about the Coke brand or better about the ads themselves, will actually result in consumers consuming more of the product,” Morgan Stanley’s Bill Pecoriello wrote in a research note the day after the investor meeting. But Coke is optimistic it can regain its old magic, and is banking on a new slogan: “Welcome to the Coke side of life.”
BREAKTHROUGH HIT?
With PepsiCo about to surpass Coke as the beverage king on Wall Street – Pepsi’s market capitalization has soared in recent years to $97.9 billion, putting it less than a billion dollars behind its rival(對手) – the heat is on Coke. It’s set to launch a new marketing campaign in March, 2006. And having taken a quick look at Coke’s investor presentation on Dec. 7 in New York, my sense is that Coke may be moving in the right direction.
Given the continued shift by consumers away from soda – Coke’s stronghold – and into alternative beverages like juice, tea and water, Coke badly needs a breakthrough hit. And given that shift away from soda, some analysts wonder whether even the catchiest new ads will be enough to put the fizz back into Coke.
SAME OLD, UPDATED.
The new flavors of PowerAde sports drink will probably enable Coke to continue stealing market share from PepsiCo’s Gatorade brand. And Coke is getting a little more creative with packaging, including new, aluminum bottles of Coke that will be sold in nightclubs, and an 8.4-ounce “100 calorie” version of its flagship Coke that will appeal to women who want fewer calories and will like the fact that the small can will fit in their purse. I doubt whether other new products will be successful, including a new coffee-flavored soda called Coke-Cola Blak that I tried. Think carbonated coffee. But I’m not sure if the product, which Coke is pitching as an afternoon pick-me-up for the 35-and-over set, is going to pull people away from their afternoon Frappucino fix. And my opinion is that Vault, an orange-flavored energy drink, will have just as much trouble unseating Mountain Dew among teens as did Coke’s last attempt, a product called Surge.
If there is one concern I have about the fresh offerings Coke plans to launch this year, it appears that many of them are simply new brands, not new products.
68.According to the passage, we can know that ____.
A. Coke mainly depends on new products recently
B. nowadays Coke is comparatively less popular
C. PepsiCo has taken the place of Coke
D. Coke has few new brands
69.The underlined word “soared” means ____.
A. achieved     B. dropped     C. increased     D. failed
70.When the middle-aged people feel tired, what would they prefer to drink in order to continue their work?
A. Vault.     B. Surge.     C. Coke-Cola Blak     D. Frappucino.
71.What is the best title of the passage?
A. Troubles in Coke Company
B. Varieties of New Products
C. The Importance of New Advertisements
D. The Relationship Between Coke and Pepsi

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


第三部分：閱讀理解（共20小題，每小題2分，滿分40分）
閱讀下列短文，從所給的四個選項（A、B、C、D）中，選出最佳選項。
Science summer camps are one of the best ways to improve creativity of students and teach them a practical approach towards science and its applications （應用）．Students taking part in the camps can learn to appreciate science and technology at an early age, to be better positioned for further learning and finally better prepared to face challenges．Apart from theories, scientific experiments and discussions are encouraged at these camps．
The science summer camps are usually held between June and August and it’s good for parents to start planning their children’s summer camps at least 6 to 7 months in advance．This period of time provides an opportunity for them to do proper research and save money．With more than 2,000 summer camps in the US, there is a wide variety for parents to choose from．If the child doesn’t like biology, there  is no point sending him to an anatomy （解剖學） science camp．Likewise （同樣地）, if one thinks that his child limits himself to books throughout the school year, he should try and choose camps which provide students with an opportunity to move out in the open and be physically active．To make the task easier, there are many websites which provide online resource materials to help parents select a summer camp that fits the needs of their children．
Generally, a science summer camp costs between $ 150 and $ 500, depending on where the camp is located, how long it lasts and of course what subject it covers．Some of them also provide scholarships （獎學金） for bright students to encourage them．
56．A science summer camp offers students      ．
A．chances to be well prepared for future study
B．chances to research and save money
C．ways to get online resource materials
D．chances to live independently
57．What does the underlined word “them” in the second paragraph refer to?
A．Students     B．Organizers CScientists             D．Parents
58．We can infer （推斷） from the second paragraph that        ．
A．it’s important for children to relax at the summer camps
B．online resource materials can help to organize a summer camp
C．proper camps should be chosen for children according to their needs
D．different parents should be chosen for children according to their needs
59．What do the costs of a science summer camp depend on?
A．Organizers’ efforts and suggestions．  B．Location, time and content．
C．Students’ likes and dislikes．       D．Effects and benefits．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Spider-Man cannot escape the harsh realities of the current economic times and will lose his job in a latest issue of the Amazing Spider-Man hitting stories ( first published in 1963) this week.
Peter Parker, official photographer of the mayor by day and New York City crime fighter by night, is going to face new challenges, including unemployment.
"He's going to struggle with unemployment and trying to save the city while he can barely afford to keep a roof over his head," said Steve Wacker, Marvel Comics senior editor.
Parker has always been a grounded character with real-world problems, Wacker said. His aunt is frequently sick, he has girlfriend troubles, and he sometimes struggles to find work. In addition, Spider-Man story lines are often set against a backdrop of current events.
In the near future, Parker will have to juggle paying bills and buying "web-fluid" and other materials to fix his superhero costume in addition to keeping his dual identities under wraps.
Parker's work history includes photographer, assistant high school coach, science teacher and scientific researcher, according to his biography on the Marvel Web site. His education includes a college degree in biophysics and some postgraduate work in biochemistry.
It was at a science exhibit he attended as a teenager that he was bitten by a radioactive spider and got the creature's strength, agility and weaving ability, says Marvel Comics.
And although Parker has skills few others can claim, he probably won't list these on his resume: superhuman strength, ability to cling to most surfaces, fast traveling ability aided by web-slinging and spider-sense danger avoidance system.
49. According to the story, Parker is likely to________.
A. look for another job.
B. have a girlfriend.
C. live in a large  house.
D. buy a new superhero costume.
50. Parker didn’t work as________.
A. a photographer.  B. an assistant coach   C. a science teacher.  D. a spider-man
51. The underlined part in the third paragraph means:
A. he has a roof over his head
B. he has a room to live in
C. there is a roof in his head
D. he has a picture of a roof in his head.
52. This passage mainly tell us _______.
A. Parker is a   spider-man.
B. how Parker became a spider-man.
C. life is hard for everyone in current economic times.
D. the amazing spider-man comic is popular until now. 

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


A breathtaking trick potentially left over from our ancestors might be found in us — the ability to sense oxygen through our skin.
Amphibians, animals such as frogs that can live both on land and in water, have long been known to be capable of breathing through their skin. In fact, the first known lungless frog that breathes only through its skin was discovered recently in the rivers of Borneo.
Now the same oxygen sensors found in frog skins and in the lungs of mammals (哺乳動物) have unexpectedly been discovered in the skin of mice.
“No one had ever looked,” explained Randall Johnson, a biologist researcher.
Mice and frogs are quite distant relatives, so the fact they have these molecules (分子) in common in their skin suggests they might well be found in the skin of other mammals, such as humans.
“We have no reason to think that they are not in the skin of people too,” Johnson said.   These molecules not only detect oxygen, but help increase levels of vital red blood cells, which carry oxygen around the body. Normal mice breathing in air that is 10 percent oxygen—a dangerously low level similar to conditions at the top of Mount Everest, and about half that of air at sea level. However, mice that had the oxygen sensor HIF-1a genetically removed from their skin failed to produce this hormone (荷爾蒙) even after hours of such low oxygen.
These findings, if they hold true in humans, suggest one could raise the level of oxygen circulating inside the body. This could help treat lung diseases and disorders such as anemia (貧血癥) without injecting drugs, which make up a multibillion-dollar market, Johnson said.
Athletes also often try to get more oxygen delivered to their muscles in order to improve their performance. They often do this by training at high altitudes or in low-oxygen tents. The new study suggests they might want to expose their skin as well as breathing in low-oxygen air to improve their performance. “It’s hard to say what exactly might be done, however—there’s a lot we don’t know yet,” Johnson explained.
The scientists detailed their findings in the April 18 issue of the journal Cell.
49. Which of the following statements is TRUE according to the passage?
A. Johnson believes that Oxygen sensors also exist in human skin.
B. People have to surf the Internet to read detailed findings.
C. It has been proved that these findings help treat lung diseases.
D. It has long been expected oxygen sensors exist in mice’s skin. 
50. One of the functions of the molecules mentioned above is _______.
A. carrying oxygen around the body                   B. improving athletes’ performance
C. detecting oxygen                                          D. increasing level of oxygen
51. What is Johnson’s attitude to the application of the findings to the athletes’ training?
A. Negative                  B. Doubting                  C. Positive             D. Hesitating
52. The best title of the passage may be _______.
A. Great Findings Benefits Athletes A Lot
B. Frogs And Mice Are Distant Relatives
C. First Known Animal Breathes Through Skin
D. Humans Might Sense Oxygen Through Skin

查看答案和解析>>

同步練習冊答案