题目内容
Dolphins are not fish, but warm-blooded mammals (哺乳动物). The young dolphin is born in water and is 1 on milk from the mother's body. It can grow up to three metres in 2 . It has 3 and it eats fish. Its nose is very long, thus 4 a beak (鹰钩). It has a brain of the same 5 as a human being's.
Dolphins swim about in 6 , going over and under the 7 of the water in curves (曲身鱼跃). They make 8 to talk to each other and to help them find food and the 9 . They do not use their ears to 10 these, sounds, but the lower 11 of the mouths.
Some dolphins seem to look 12 people. They leave the others and swim up and down near the 13 , mixing with swimmers. Sometimes children may 14 on their back.
A story was told about a dolphin in the last century. In a dangerous part of the sea 15 the coast of New Zealand, the 16 learnt to look for a dolphin called Jack. Jack met every ship in the area and 17 it the way. Then a passenger on a ship called “The Penguin” shot and 18 him. Jack 19 and for nine years more continued to 20 all the ships through the sea except “The Penguin”, which later hit a rock and sank with a loss of a hundred lives.
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解析：
完形填空：
Dolphins(海豚) are social animals．Many of them even 1 around humans． 2 being playful, they are helpful to men．For example, 3 400 B．C．the Greek poet Arion was saved from 4 by a dolphin． 5 , dolphins have been helping swimmers 6 in trouble．Swimmers, however, are not 7 humans they help．In some parts of the world, they help men 8 fish．
Dolphins are very clever． 9 brain is even larger than a human brain．Therefore, some people think a dolphin 10 smarter than a man．But 11 , brain size is not the only measure of cleverness．Besides, 12 dolphins’ cleverness in other ways is not possible 13 men cannot talk with them．But we can almost 14 which seem to be 17 a form of language．Up to now men 18 able to find out how dolphins are talking．So no one really knows 19 they have in mind．If we could talk with them, perhaps they could teach us to be 20 they seem to be．
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1． A．enjoy to be |
B．are used to be |
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C．enjoy being |
D．fond of being |
| 2． A．In addition | B．In addition to |
| C．Except for | D．With the exception of |
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3． A．as far as |
B．as long as |
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C．as soon as |
D．as early as |
| 4． A．dead | B．being dead |
| C．drowning | D．killing |
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5． A．Since |
B．Ever since then |
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C．Until then |
D．From now |
| 6． A．to be | B．who |
| C．who being | D．who are |
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7． A．only |
B．the only |
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C．just only |
D．the just |
| 8． A．catching | B．catch |
| C．being caught | D．caught |
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9． A．A dolphin |
B．A dolphin and his |
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C．A dolphin’s |
D．Dolphins’ |
| 10．A．will be | B．must be |
| C．can’t be | D．mustn’t be |
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11．A．of course |
B．in the end |
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C．by nature |
D．on the contrary |
| 12．A．measure | B．for measure |
| C．measuring | D．for measuring |
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13．A．since |
B．and |
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C．unless |
D．but |
| 14．A．sure | B．certain |
| C．be sure | D．be certainly |
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15．A．people |
B．fish |
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C．humans |
D．each other |
| 16．A．voice | B．noise |
| C．sounds | D．cries |
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17．A．at least |
B．as |
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C．nothing like |
D．possible |
| 18．A．have been | B．haven’t been |
| C．will be | D．won’t be |
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19．A．why |
B．where |
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C．what |
D．which |
| 20．A．happy like | B．happily like |
| C．as happy as | D．as happily as |
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