water to grow is well-known. A. That trees need B. These trees need C. That tree needs D. Trees need 题目和参考答案——青夏教育精英家教网—

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4._______ water to grow is well-known.

A. That trees need B. These trees need C. That tree needs D. Trees need

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18. _________ water to grow is well-known.

A. That trees need B. These trees need

C. That tree needs D. Trees need

完形填空（共20小题；每小题1. 5分，满分30分）

阅读下面短文，从短文后所给各题四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。

Mars is not, it seems, the dry old planet we once believed （36）．Astronauts who are （37） to go there in the next decade may find plenty （38） water to slake （消除） their thirst．And with water present the （39） of finding some sort of life of Mars are （40） brighter．

This is the view of forty geologists who have been analyzing （41） of pictures and other scientific （42） obtained by robot explorers in the sixties and seventies．

To begin with, scientists thought the Red planet was as （43） as the Moon （44） dust storms swirling over vast sandy （45）．But now the picture is very different （46） mountains and valleys carved by （47） glaciers and rivers rushing and rumbling deep underground．

In a report on the analysis of the Martian pictures Dr．Michael Car of the U．S．Geological Survey comments: “I am convinced （48） lots of water on Mars．” Any surface water will be in the （49） of ice．But it could save explorers from （50） to take so much （51） with them．

The report says （52） Mars probably had a warmer climate in ages （53） due to its axis （轴） having been more tilted （倾斜） towards the sun．

（54） signs of plant or animal life have been detected by instruments landed on Mars, （55） the landing vehicles have been sent there for a few years．

36．A．it is B．it C．it to be D．was

37．A．expected B．hoped C．required D．sent

38．A．to B．of C．more D．in

39．A．chances B．openings C．occasions D．possibility

40．A．quite B．very C．much D．more

41．A．a few B．many C．thousand D．thousands

42．A．skills B．news C．intelligence D．information

43．A．peaceful B．quiet C．lifeless D．dead

44．A．of B．with C．for D．through

45．A．deserts B．mountains C．rivers D．seas

46．A．from B．between C．for D．with

47．A．energetic B．great C．heavy D．powerful

48．A．there’s B．there’re C．here’s D．here’re

49．A．appearance B．way C．form D．shape

50．A．have B．having C．carry D．carrying

51．A．water B．ice C．equipment D．oxygen

52．A．what B．if C．how D．that

53．A．pass B．past C．ago D．before

54．A．Not B．No C．Nor D．Never

55．A．probably B．perhaps C．supposed D．although

Tuvalu, north of Fiji, is a tiny country in the Pacific Ocean.

Storms and huge waves are a constant threat and none of Tuvalu's nine little islands is more than five metres above sea level. Salt water is already entering the country's drinking water supply, as well as damaging plants that produce fruit and vegetable.It fears it will be swallowed up by the sea. Without urgent help, the country's days are numbered.

But Tuvalu is not the first place to face sinking into the sea. Venice, a historic city in Italy best known for its canals, has sunk about 24cm over the past 100 years. Experts say that it will have sunk another 20-50cm by 2050. A century ago, St. Mark's Square, the lowest point in the city, flooded about nine times a year. Nowadays, it happens more than 100 times.

While Venice is slowly sinking into the mud on which it stands, Tuvalu's rising sea level is caused by global warming.

The average global temperature has increased by almost 0.5 centigrade degree over the past century; scientists expect it to rise by an extra 1-3 degrees over the next 100 years.

Warmer weather makes glaciers melt, adding more water to the ocean. The warmer temperatures also make water expand, so it takes up more space, causing the sea level to rise. The sea level has risen about 10-25cm in the last 100 years.

People have been increasing the greenhouse gases in the atmosphere, such as CO2, through burning coal, oil and gas. This adds to the power of the greenhouse effect, making the planet even warmer.

Many scientists believe that, if the warming is not stopped, there will be huge climate changes. The sea level could rise by one metre this century.

Should this come true, millions of homes would be swallowed up by the sea and the world will be flooded with "climate refugees" looking for somewhere else to live.

We can infer from Paragraph 2 that ______.

A. Tuvalu is in danger of being swallowed up by the sea

B. all Tuvalu’s islands are about five meters above the sea level

C. drinking water in Tuvalu has been destroyed

D. Tuvalu is often flooded by storms and waves

The author uses Tuvalu and Venice as examples in order to explain ______.

A. they are the first places sinking into the sea

B. they are both sinking into the mud where they stand

C. they will disappear in the future

D. their trouble is caused by global warming

What does the underlined word “refugees” mean?

A. People forced away from their homeland.

B. Sudden changes caused by world climate.

C. Animals whose lives are closely connected with weather.

D. Bad effect of climate changes.

Which of the following is NOT true according to the text?

A. The main cause of global warming is human pollution.

B. The average global temperature has risen by 1-3 centigrade degrees over the past 100 years.

C. The warmer temperature causes the sea level to rise.

D. There will be huge climate changes unless the warming is stopped.

According to the passage, the root cause of global warming is _______.

A. the burning of coal, oil and gas B. the position change of the solar system

C. human pollution D. carbon dioxide emission

It was one of the hottest days of the dry season. We had not seen rain in almost a month. Every day, my husband would the process of trying to get water to the fields. Unless we saw some rain soon, we would lose everything.

On this day I learned the true lesson of and witnessed the only miracle（奇迹） I had ever seen. I was in the kitchen __ ___ I saw my son, Billy, walking toward the . He was walking with effort, trying to be as quiet as possible. Minutes after he into the woods, he came running back. I went back to make sandwiches, thinking that whatever he had been doing was completed. Moments later, , he was once more walking slowly toward the woods. This activity went on for an hour.Finally, I couldn’t help following him and saw the most amazing .

Several large deer stood in front of him. Billy walked right up to them. I almost at him to get away. A huge deer was dangerously close. the deer didn't even move as Billy knelt down. I saw a tiny deer lying on the ground, obviously suffering from , lift its head to lap up the water cupped in Billy’s hands. When the water was , Billy ran back to get more. It then became clear to me.

I stood on the edge of the woods, watching the boy working so hard to save another life. As my tears began to hit the ground, they were suddenly joined by other drops. It was as if the God himself was with pride. The rain that day saved our farm just like the actions of one little boy who saved another.

1.A. take in B. try on C. set about D. set up

2.A. waiting B. offering C. watering D. raining

3.A. when B. while C. until D. before

4.A. fields B. house C. woods D. garden

5.A. jumped B. climbed C. fell D. disappeared

6.A. though B. besides C. however D. therefore

7.A. sign B. scenery C. view D. scene

8.A. shouted B. shot C. looked D. spoke

9.A. And B. Otherwise C. Thus D. But

10.A. thirst B. illness C. heat D. pain

11.A. lost B. missing C. gone D. missed

12.A. kind B. clever C. smart D. honest

13.A. raining B. appearing C. singing D. crying

Imagine when you are sailing an ocean for the first time, you see a big fish swimming near your ship. You might be scared, and worried about whether it will turn over your ship for a meal. In fact, it is not a fish at all, but a gentle giant whale.

Whales are not fishes but mammals (哺乳动物). Their body temperature stays the same, and does not change with the temperature of their environment. They breathe air, so they have to come out of the water to get oxygen. Thus, they cannot afford to fall into a sleeping state for too long, since they need to be awake in order to breathe. It is thought that only half of their brains sleep at a time, so that whales are never completely asleep. Females give birth to the young. They have hair. Although they are not covered in hair or fur like many mammals, whales have some bristles (胡子), usually on their heads.

Whales are highly social animals with complex languages and intelligence. They communicate with each other using romantic sounds, called “whale songs”. Being so large and powerful, these sounds are also loud.

Whales are endangered as a result of whaling (捕鲸) from the eleventh century to the twentieth. It has attracted the attention of environmentalists and some measures (措施) have been taken to protect whales.

1.How many aspects show that whales are mammals?

A．One. B．Two. C．Three. D．Four.

2.We can infer from the second paragraph that ____.

A．whales can breathe in the water

B．if a whale sleeps too long, it will get drowned

C．in order to breathe, whales never sleep

D．whales give birth to the young on the land

3. How do whales communicate with each other?

A．By body language. B．By speaking languages.

C．By making song-like sounds. D．By giving off a smell.

4.Which of the following is TRUE according to the passage?

A．Whales are cold-blooded mammals like fishes.

B．Whales are hunted for food by people.

C．Whales are very harmful to human beings.

D．Whales are in danger because of being killed by people.

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