The first satellite telephone signals was called Early Bird.A. was used to sendB. used to

发布时间：2020-08-17 00:46:03

The first satellite     telephone signals was called Early Bird.
A. was used to send
B. used to be sent
C. was used to sending
D. used to send

网友回答

A. was used to send
B. used to be sent
C. was used to sending
(答案→)D. used to send
解析：考查过去分词做定语， be used to do被用来做什么，be used to doing习惯于做…,used to do过去常常做…,句意：第一个被用来发送电话信号的卫星被成为早鸟。The first satellite 和Used是被动关系，用过去分词做定语，选D。
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