At first sight the planet Mars(火星)does not appear very welcoming to any kind of life. It has very little oxygen and water, the temperature at night is below 50 degrees and winds of 100 miles (161 kilometers)per hour cause severe dust storms. However, the surface of the planet seems to show that water flowed across it at some time in the past, and it is believed that there would be enough ice at the poles to cover the planet with water if it melted. Although there is no life on the Mars now, some scientists think there may have been some form of life a long time ago. At that time, the planet had active volcanoes(火山); the atmosphere was thicker and warmer; and there was water. In fact, in some ways the Mars may have been similar to the Earth, where life exists.

Some people believe that the Mars could support life in the future if the right conditions were produced. The first step would be to warm the planet using certain gases which trap the Sun’s heat in the planet’s atmosphere. With warmth, water and carbon dioxide（二氧化碳）, simple plants could begin to grow. These plants could slowly make the Mars fit to live on. It is judged that the whole process might take between 100, 000 and 200, 000 years. In the meantime, people could begin to live on the planet in a special closed environment. They would provide a lot of useful information about conditions on Mars and the problems connected with living there.

1. According to the passage, the planet Mars has no __________on it.

A．a(chǎn)nimals B．mountains

C．dust D．winds

2. What is the topic of Paragraph 2?

A．Certain gases should be used to warm Mars.

B．Plants should be grown to make Mars fit to live on.

C．Mars could support life with right conditions in the future.

D．People could live on Mars in a special closed environment.

3. The most suitable title for the passage is __________.

A．No Life on Mars

B．A Study of Mars

C．The Future conditions on Mars

D．The Possibility of Life on Mars

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015年北京市海淀區(qū)高三一模英語試卷（解析版） 題型：單項(xiàng)填空

—It is said that John’s paper got an A.

—He deserves it．He _________ a lot before he handed it in.

A． prepared B． prepares

C． had prepared D． has prepared

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年四川營山縣回龍中學(xué)高一12月檢測英語試卷（解析版） 題型：單項(xiàng)填空

—I’m sorry for breaking the cup.

—Oh, — I’ve got plenty.

A. forget it B. my pleasure

C. help yourself D. pardon me

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年河南商丘市高三第二次模擬考試英語試卷（解析版） 題型：書面表達(dá)

書面表達(dá)

假設(shè)你是商丘某高中學(xué)生李華，請為你的澳大利亞筆友Tim寫封電子郵件，介紹商丘的情況及一些旅游景點(diǎn)，希望Tim到商丘來旅游。主要內(nèi)容包括：

1．商丘地處中原，交通便利，氣候宜人。

2．重點(diǎn)介紹兩處旅游景點(diǎn)，如：南湖、商丘古城遺址、應(yīng)天書院遺址等。

注意：1．詞數(shù)100左右；開頭和結(jié)尾已為你寫好，但不計(jì)入總詞數(shù)。

2．可以適當(dāng)增加細(xì)節(jié)，以使行文連貫。

參考詞匯：商丘古城--the ancient city of Shangqiu 應(yīng)天書院--Ying tian Academy

南湖--the South Lake

Dear Tim,

Welcome to my hometown, Shangqiu. ___________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

_______________________________________________________________________________

Yours sincerely,

Li Hua

查看答案和解析>>

科目：高中英語 來源：2016屆湖南株洲高三上學(xué)期教學(xué)質(zhì)量統(tǒng)一檢測一英語試卷（解析版） 題型：完形填空

完形填空

閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出可以填入空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。

Rolling, dark clouds covered much of the sky. The warm wind suddenly became cold and picked up wildly, sending some dead leaves flying across the sky. A few drops of rain mixed with ice began to fall, then into heavy .

Doug, my older brother, and I first rode the bus to a bus stop. Then we off and began our long walk home. The wind was the snow around us like a huge blanket, making it________to see clearly. The only sounds we heard were the of the wind as well as the crunch of our footsteps on the snow. Slowly but , my brother and I were to death. Looking to my left, I saw a pine tree and squatted(蹲下) down.

“What are you doing here, Bud? Come on!” said Doug, “There’s no behind this little tree. If we rest here, we will die from the freeze.”

“You go on, and I’ll soon.” I replied.

Doug was for a moment. Then he spoke, “Bud, do you remember the four pine

trees at the side of the road? we get there, we can rest a while and get warm. You just stick your hand down the back of my , keep your head down and hold on.”

As we struggled through the snow, my hand from my brother’s belt and I fell to my knees.

“Where are the trees?” I said, as the snow up around me like a feather bed. Once again, Doug pulled me to my feet.

“Just a few more and we’ll be home and warm,” he said.

As the darkness closed around us, we approached home, . I only heard a worried shouting not in the distance. Then someone took my hand and me into a warm, bright light. And then I survived.

Now, I still think about the lesson learned from our winter story: Never

, no matter what the odds and whatever to come.

1.A. slowlyB. elegantlyC. peacefullyD. fiercely

2.A. snowB. stormC. smogD.fog

3.A. cameB. brokeC. showedD. got

4.A. meltingB. rollingC. pollutingD. clearing

5.A. difficultB. simpleC. availableD. likely

6.A. callB. shoutC. toneD. whistle

7.A. surelyB. carefullyC. secretlyD. hardly

8.A. scaringB. freezingC. fightingD. starving

9.A. attractionB. recreationC. protectionD. radiation

10.A. catch upB. fall behindC. look onD. hang around

11.A. braveB. silentC. proudD. confident

12.A. BeforeB. UnlessC. AlthoughD. When

13.A. dressB. bootC. beltD. coat

14.A. slippedB. brokeC. separatedD. shook

15.A. wentB. clearedC. mixedD. folded

16.A. stopsB. stepsC. milesD. blocks

17.A. discouragedB. dynamicC. unconsciousD. enthusiastic

18.A. persuadedB. followedC. forcedD. pulled

19.A. survivalB. travelC. explorationD. research

20.A. hold onB. took offC. give upD. set aside

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年內(nèi)蒙古鄂倫春自治旗大楊樹二中高一上學(xué)期期末英語卷（解析版） 題型：單項(xiàng)填空

Study hard, and you will ______ to Beijing University.

A. admit B. be admited

C. be admitted D. be admitting

查看答案和解析>>

科目：高中英語 來源：2016屆山東青島第五十八中高三12月月考英語試卷（解析版） 題型：短文改錯(cuò)

短文改錯(cuò)

假定英語課上老師要求同桌之間交換修改作文，請你修改你同桌寫的以下作文。文中共有10處錯(cuò)誤，每句中最多有兩處。錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改。

增加：在缺詞處加一個(gè)漏字符號()，并在其下面寫出該加的詞。

刪除：把多余的詞用斜線(＼)劃掉。

修改：在錯(cuò)的詞下劃一橫線，并在該詞下面寫出修改后的詞。

注意：1．每處錯(cuò)誤及其修改均僅限一詞；

2．只允許修改l0處，多者(從第11處起)不計(jì)分。

One year ago, I had a special English lesson hold at the railway station. It was quite different from the regular English classes we were familiar to, for we had no textbooks, no blackboard and no fixed seats.

Gathered at the entrance of the station, we told to collect as much English words and sentence as possible there. Curious and excited, we walked around the station and looked everywhere, search for any information in English. Whenever an English word comes into sight, the class would burst into the cheers as if we had discovered a new world. With the Chinese translation and vividly pictures, we could figure out its meaning with ease.

Now, this unforgettable lesson still encourages me to be an active learner where I go.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年湖北長陽第一高級中學(xué)高二上學(xué)期期末英語試卷（解析版） 題型：閱讀理解

Sports can help you keep fit and get in touch with nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great influence on the environment.

Some sports are resource-hungry. Golf, as you may know, eats up not only large areas of countryside, but also tons of water. Besides, all sorts of chemicals and huge amounts of energy are used to keep its courses (球場) in good condition. This causes major environmental effects. For example, in the dry regions of Portugal and Spain, golf is often held responsible for serious water shortage in some local areas.

There are many environment-friendly sport. Power walking is one of them that you could take up today. You don’t need any special equipment except a good pair of shoes; and you don’t have to worry about resources and your purse. Simple and free, power walking can also keep you fit. If you walk regularly, it will be good for your heart and bones. Experts say that 20 minutes of power walking daily can make you feel less anxious, sleep well and have better weight control.

Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be “green gyms”. They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces. There is no special requirement for you to start your membership. And best of all, it’s free.

1. Which of the following is the author most probably in favor of?

A. Cycling around a lake.

B. Motor racing in the desert.

C. Playing basketball in a gym.

D. Swimming in a sports center.

2.What do we know about golf from the passage?

A. It is popular in Portugal and Spain.

B. It causes water shortages around the world.

C. It pollutes the earth with chemicals and wastes.

D. It needs water and electricity to keep its courses green.

3.The author uses power walking as an example mainly because ___________.

A. it is an outdoor sport

B. it improves our health

C. it uses fewer resources

D. it is recommended by experts

4.The author writes the passage to ____________.

A. show us the function of major sports

B. encourage us to go in for green sports

C. discuss the major influence of popular sports

D. introduce different types of environment-friendly sports

查看答案和解析>>

科目：高中英語 來源：2016屆四川資陽市高三第一次診斷性考試英語試卷（解析版） 題型：閱讀理解

Ever walked to the shops only to find, once there, you’ve completely forgotten what you went for? Or struggled to remember the name of an old friend? For years we’ve accepted that a forgetful brain is as much a part of aging as wrinkles and gray hair. But now a new book suggests that we’ve got it all wrong.

According to The Secret Life of the Grown-up Brain, by science writer Barbara Strauch, when it comes to the important things, our brains actually get better with age. In fact, she argues that some studies have found that our brain hits its peak between our 40s and 60s — much later than previously thought.

Furthermore, rather than losing many brain cells as we age, we keep them, and even produce new ones well into middle age. For years it’s been assumed that brain, much like the body, declines with age. But the longest, largest study into what happens to people as they age suggests otherwise.

This continuing research has followed 6,000 people since 1956, testing them every seven years. It has found that on average, participants performed better on cognitive (認(rèn)知的) tests in their 40s and 50s than they had done in their 20s. Specifically, older people did better on tests of vocabulary, verbal memory (how many words you can remember) and problem solving. Where they performed less well was number ability and perceptual speed — how fast you can push a button when ordered. However, with more complex tasks such as problem-solving and language, we are at our best at middle age and beyond. In short, researchers are now coming up with scientific proof that we do get wiser with age.

Neuroscientists are also finding that we are happier with aging. A recent US study found older people were much better at controlling and balancing their emotions. It is thought that when we’re younger we need to focus more on the negative aspects of life in order to learn about the possible dangers in the world, but as we get older we’ve learned our lessons and are aware that we have less time left in life: therefore, it becomes more important for us to be happy.

1.Barbara Strauch probably agrees that ______.

A. the young are better at handling important things

B. people’s brains work best between their 40s and 60s

C. aging leads to the decline of the function of the brain

D. wrinkles and gray hair are the only symbols of aging

2.The continuing research has found older people perform better on ______.

A. perceptual speed B. number ability

C. vocabulary tests D. body balance

3.People are happier with aging because ______.

A. they learn to value the time left

B. they know how to share feelings

C. they cannot focus on negative aspects

D. they do not realize the possible dangers

4.What is the main idea of the passage?

A. People get happier with age.

B. People get wiser with age.

C. People get more forgetful with age.

D. People get more self-aware with age.

查看答案和解析>>

同步練習(xí)冊答案