题型：选词填空（语篇） 题类：常考题 难易度：困难
广西2018-2019学年初中英语中考总复习：选词填空
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worse solution covering themselves patient's dangerous but decisions ability researching |
A Cloud of Hope and Danger
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, her body and filling her lungs(肺). 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 body, destroying the cancer.
Fighting cancer with nano-robots is only an idea today, scientists say that it could be possible in the future. Using nano-robots for good purposes such as fighting disease or repairing the environment may be theto many of today's problems.
However, nano-robots could be a risk 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 . Scientists will not have the ability to build millions of nano-robots one by one.
This to reproduce is making some scientists worried. What if something goes wrong in the programming? Quite a lot of crazy nano-robots would be far than any disease. Some people think that if they get out of control, nano-robots could destroy the Earth.
What should be done? Should we continue nano-robots or should we search for other methods? This is one of the many difficult that we have to make in the future.
make progress, at the end of, feel sorry for, be proud of, do well in, make mistakes, take part in, get into trouble |
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scarf shop gentle interest love |
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