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Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.
A. roots B. but C. covered D. reproduce E. energy
F. probably G. gaining H. surrounding I. supplied J. life
Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first 1 on land, we 2 think of strange animals coming out of the oceans, but, in fact, no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They 3 the first land animals with the 4 and food necessary, since they ---the plants are the only form of life that is able to get and store 5 .
The first plants to exist out of the water were probably certain kinds of algae （ 藻类 ）which were followed by other plants that grew close to the ground and needed water in which to 6 . Once the move to land has been made, however, evolution took place quickly. By the end of 100 million years, plants had developed their 7 , and some have got tree-like forms since height was very important in 8 sunlight. About 300 million years ago, much of the world was 9 with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
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. If plants from one habit were moved to the other type of habit, they changed their appearance and _____ the new environment.
A. adapted B adapted to C. suited to D. fit
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Life on land probably began about 430 million years ago, though it has existed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since they, the plants, are the only form of life that is able to get and store energy.
The first plants to exist out of the water were probably certain kinds of algae（海藻）which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution（进化）took place quickly. By the end of 100 million years, plants had developed their roots（根）,and some had got tree -like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
The main idea of the first paragraph is ________.
A. life on land probably began 430 years ago
B. the first animal on land came from oceans
C. there wouldn't be animals without plants
D. plants are the only form of life that is able to get and store energy
Which of the following statements is true according to the passage?
A. Algae has existed for more than 430 million years.
B. It is impossible that algae might be the earliest plant on land.
C. Plants get food from animals in the oceans.
D. Evolution began after animals appeared on land.
Plants with roots appeared about ________ million years ago.
A. 430 B. 300 C. 330 D. 100
According to the passage, ________ appeared earlier than ________.
A. apples; oranges B. oranges; apples
C. oranges; roses D. algae; wheat
查看习题详情和答案>>根据上下文及所给单词的首字母或汉语提示，写出所缺单词的正确形式。（满分10分，每空1分）
Smoking is a very bad habit. First of all, Cigarettes
are expensive. Smokers have to a lot of money 1.
buying them. That is a (浪费) of money. 2.
Smoking is bad for smokers’ h . It may be 3.
responsible for many d . Even worse, it is harmful 4.
to people them. It is said that smoking is one 5.
of the ways to (引起) cancer. Second, there can be 6.
fires can result in a great loss of life 7.
and property because of a smoker’s (粗心). 8.
, we are teenagers and have no income. We have 9.
no right to do that. It will be even worse if we f into 10.
bad habits.
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Life on land probably began about 430 million years ago, though it has stayed in the water for perhaps as much as 3,000 million years. When we think of the first thing on land, we probably think of strange animals coming out of the oceans, but in fact no animals could have been living if plants had not been on land first. Plants had to be on land before animals arrived. They supplied the first land animals with the surrounding and food necessity, since then, the plants, are the only form of life that is able to get and store energy.
The first plants to stay out of the water were probably certain kinds of algae（海藻）which were followed by other plants that grew close to the ground and needed water in which to reproduce. Once the move to land had been made, however, evolution（进化）happened quickly. By the end of 100 million years, plants had developed their roots（根), and some had got tree -like forms since height was very important in gaining sunlight. About 300 million years ago, much of the world was covered with forests of huge trees. In most ways they were like modern trees. They had roots, leaves, wood, but mostly they had not developed seeds.
59．The main idea of the first paragraph is ________.
A. life on land probably began 430 years ago
B. the first animal on land came from oceans
C. there wouldn't have been animals without plants
D. plants are the only form of life that is able to get and store energy
60．Which of the following statements is true according to the passage?
A. Algae probably has stayed for more than 430 million years.
B. It is impossible that algae might be the earliest plant on land.
C. Plants get food from animals in the oceans.
D. Evolution began after animals appeared on land.
61．Plants with roots appeared about ________ million years ago.
A. 430 B. 300 C. 330 D. 100
62．According to the passage, ________ appeared earlier than ________.
A. apples; oranges B. oranges; apples
C. oranges; roses D. algae; wheat
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