题目内容

【题目】请用下列短语的适当形式补全句子(28分)

(1)The elephants often ________.

(2)My mother always ________ and buys lots of clothes.

(3)Alex is a good boy and he always ________ and helps teachers.

(4)This cat is naughty and it sometimes ________.

(5)My father is healthy and he never ________.

(6)This summer is very hot and I often ________.

(7)My grandpa and grandma often ________ and watch TV.

【答案】(1)eat bananas (2)goes shopping (3)cleans the classroom (4)climbs trees (5)goes to the doctor (6)go swimming (7)drink tea

【解析】

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【题目】用方框中所给单词的适当形式填空,使短文完整、通顺。每词限用一次。

cover bad them patient danger decision solute but able research

cover bad them patient danger decision solute but able research

A Cloud of Hope and Danger

In 2050, a small cloud floats through the air in a hospital operating room(手术室). In the room a patient, suffering from cancer, lies on a table. The cloud surrounds (包围) the patient, 1her body and filling her lungs (). The cloud is not smoke or steam. It is made of millions of microscopic robots called nano-robots(纳米机器人). These tiny robots move from cell(细胞) to cell in the 2body, destroying the cancer cells.

Fighting cancer with nano-robots is only an idea today, 3scientists say that it would be

possible in the future. Using nano-robots for good purposes such as fighting disease or repairing the environment may be the 4to many of today’s problems.

However, nano-robots could be a 5risk as well. Since nano-robots are so tiny, they will

have to work in large teams of many thousands to 'many millions. For this reason, nano robots will

have to be programmed to build 6. Scientists will not have the ability to build millions of nano-robots one by one.

This7to reproduce(复制)is making some scientists worried. What if something goes wrong in the programming? Quite a lot of crazy nan-orobots would be far8than any disease. Some people think that if they get out of control, nan-orobots could destroy the Earth.

What should be done? Should we continue9nan-orobots or should we search for other methods? This is one of the many difficult 10that we have to make in the future.

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