2. 专升本
  3. A new kind of machine【C1】________to take the place of humans. These【C2】________can do jobs that are too dangerous for humans.【C3

A new kind of machine【C1】________to take the place of humans. These【C2】________can do jobs that are too dangerous for humans.【C3

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问题     A new kind of machine【C1】________to take the place of humans. These【C2】________can do jobs that are too dangerous for humans.【C3】________, they are being developed to work in nuclear power centers, deep waters and outer space.
    This is how the new machines【C4】________. A machine is placed in an area far away from the person who controls it. The person【C5】________a special hard hat with a tiny television screen. The screen【C6】________the person to see and hear exactly what the machine is seeing and hearing. This gives the person the feeling of【C7】________in the same place【C8】________ the machine. The person controls the machine. The machine【C9】________the person’s movements exactly. If the person raises his right arm, the machine raises the right arm, too. This means a(n)【C10】________worker can do a dangerous job while staying in a【C11】________place. For example, a person can direct the machine【C12】________a bomb【C13】________going near the bomb himself.
    The new machines are not exactly【C14】________robots. Robots are controlled by a computer. The new machines are controlled by a person. The new machines are called teleoperators (遥控机器). The nuclear power industry is especially interested in teleoperators. The machines can solve the problem of【C15】________radioactive (放射性的) materials.
【C1】
选项 A、is developing
B、has developed
C、develops
D、is being developed
答案D
解析 根据句意可知，A new kind of machine与develop(研制)之间是逻辑上的动宾关系，所以应用被动语态。根据第一段最后一句中的are being developed也可得知答案。故选D。
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