语法与词汇
Astronauts are subjected to the most rigorous trainingthat has ever been devised for human beings.
A、
demanded
B、
created
C、
diagnosed
D、
allowed
【正确答案】
B
【答案解析】
句意：宇航员们接受了人类有史以来最严格的训练。devise设计；想出。
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