题目列表(包括答案和解析)
| After the “Big Bang(宇宙大爆炸)”,the earth was just a cloud of energetic dust. What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun. The problem was that the earth became violent because it was not clear whether the solid shape was to last or not. It exploded loudly with fire and rock, which were in time to produce the water vapor, carbon dioxide, oxygen, nitrogen and other gases, which were to make the earth’s atmosphere. As the earth cooled down, water began to appear on its surface. Nobody knew that it was going to be different from other planets going round the sun. Water had already disappeared from planets like Mars or satellites like the moon, but it stayed on the earth. This is how the earth began to show its special qualities. Many people think that this was important for the beginning of life. It allowed the earth to dissolve harmful gases, which had become part of the earth’s atmosphere, into the oceans and seas. That made it possible for life to begin to develop. What scientists think is that the earth was different because of the arrival of small plants growing in the water on its surface. Nobody understood that these plants were the start of many changes. They multiplied and filled the first oceans and seas with oxygen .This encouraged the development of early shellfish and all sorts of fish. Many millions of years later the first green plants began to appear on land. Scientists believe that taking carbon dioxide from the atmosphere and filling the air with oxygen helped life to develop. Later land animals appeared. Some were insects. Others, called amphibians, were able to live on land as well as in the sea. When the plants grew into forests, reptiles appeared for the first time. They produced young generally by laying eggs. Later, some huge animals, called dinosaurs, developed, They laid eggs too. They became the most important animals on the earth for millions of years. But when they disappeared, mammals became more important. They were the last group of animals and they were different because they produced their young from within their bodies. Small clever animals, now with hands and feet, appeared and spread all over the earth. They developed new methods of growing food, hunting and moving around. As time went by they covered the earth and have become the most important animals on the planet. But they are not taking care of the earth very well. They are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space. The earth may become too hot for the lives on it. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved. 1. Why was the earth different from other planets? A. It produced a lot of heat. B. The water remained. C. Water disappeared. D. It was the oldest planet. 2. Why was life able to develop on the earth but not on other planets? A. The earth had a solid shape. B. The earth did not have harmful gases in its atmosphere. C. The water stayed on the earth but not on other planets. D. The earth was not too hot and not too cold. 3. Why was it necessary for plants to grow before animals? A. Animals needed plants to protect them from the sun. B. Plants provided oxygen for animals to breathe. C. Animals could hide from hunters in forests. D. It was easier for plants to grow. 4. What problem is caused by human beings? A. They exist everywhere on the earth. B. They cause global warming. C. They find new methods of growing crops. D. They enjoy hunting and fishing. |
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| I want you to know about our neighborhood, Tangley Heights, a slum(贫民窟). I didn't go there much after I met Maxine and her disabled son Ronald and their friend, Miss Annie.In 1981 I was 12 years old. I __1__that once you are 12, you are too big for lots of things you used to __2__before, but you are too young for a job.So a whole group of us children were __3__with nothing to do, only standing at the corner to __4__if Maxine would come with popeyed(突眼的)Ronald.Somebody found that Ronald went to a school for mentally __5__kids and that every afternoon a special bus brought him home and that his mother was always there to __6__him off the bus. My mama could always make you feel special.She could see what my teachers could not, but that was a __7__between us.When my mama died, the secret died, too.It was Maxine who __8__me to her neighbor, Miss Annie, when I needed __9__with English.She told me to bring my book to her house every day after school.After a few weeks, Miss Annie said, "Vernon, I have never __10__you for money, but I would like you to help Maxine __11__up her yard." I cleaned up the yard, and then put the __12__in a bag that Ronald held.Ronald stood there __13__ the bag as if it were the most important job on earth.When you first saw Ronald, he looked like a (n) __14__animal, but what I understood was that Ronald's problem was __15__.Being scared made him look strange. | ||||
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Mars is not, it seems, the dry old planet we once believed （1） ．Astronauts who are （2） to go there in the next decade may find plenty （3） water to slake （消除） their thirst．And with water present the （4） of finding some sort of life of Mars are （5） brighter．
This is the view of forty geologists who have been analyzing （6） of pictures and other scientific （7） obtained by robot explorers in the sixties and seventies．
To begin with, scientists thought the Red planet was as （8） as the Moon （9） dust storms swirling over vast sandy （10） ．But now the picture is very different （11） mountains and valleys carved by （12） 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 （13） lots of water on Mars．” Any surface water will be in the （14） of ice．But it could save explorers from （15） to take so much （16） with them．
The report says （17） Mars probably had a warmer climate in ages （18） due to its axis （轴） having been more tilted （倾斜） towards the sun．
（19） signs of plant or animal life have been detected by instruments landed on Mars, （20） the landing vehicles have been sent there for a few years．
1．A．it is B．it C．it to be D．was
2．A．expected B．hoped C．required D．sent
3．A．to B．of C．more D．in
4．A．chances B．openings C．occasions D．possibility
5．A．quite B．very C．much D．more
6．A．a few B．many C．thousand D．thousands
7．A．skills B．news C．intelligence D．information
8．A．peaceful B．quiet C．lifeless D．dead
9．A．of B．with C．for D．through
10．A．deserts B．mountains C．rivers D．seas
11．A．from B．between C．for D．with
12．A．energetic B．great C．heavy D．powerful
13．A．there’s B．there’re C．here’s D．here’re
14．A．appearance B．way C．form D．shape
15．A．have B．having C．carry D．carrying
16．A．water B．ice C．equipment D．oxygen
17．A．what B．if C．how D．that
18．A．pass B．past C．ago D．before
19．A．Not B．No C．Nor D．Never
20．A．probably B．perhaps C．supposed D．although
(南昌市南昌二中高三冲刺模拟考试)
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
(2009届南昌市南昌二中高三冲刺模拟考试)
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
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