Robots____things that people can't,such as traveling to Mars.A.used to doingB.used to doC.are used to doD.are used to doing请说明原因,
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![Robots____things that people can't,such as traveling to Mars.A.used to doingB.used to doC.are used to doD.are used to doing请说明原因,](/uploads/image/z/12829612-4-2.jpg?t=Robots____things+that+people+can%27t%2Csuch+as+traveling+to+Mars.A.used+to+doingB.used+to+doC.are+used+to+doD.are+used+to+doing%E8%AF%B7%E8%AF%B4%E6%98%8E%E5%8E%9F%E5%9B%A0%2C)
Robots____things that people can't,such as traveling to Mars.A.used to doingB.used to doC.are used to doD.are used to doing请说明原因,
Robots____things that people can't,such as traveling to Mars.
A.used to doing
B.used to do
C.are used to do
D.are used to doing
请说明原因,
Robots____things that people can't,such as traveling to Mars.A.used to doingB.used to doC.are used to doD.are used to doing请说明原因,
C
句意是:机器人被用来做人类不能做的事,比如到火星旅行.
be used to do sth 被用来做...,可替换为be used for sth/doing sth
used to doing无此句式
used to do过去常常做……
be used to doing习惯做……