问题
选择题
An interesting suggestion on how to measure the temperature on the moon has been .
A．put on
B．put out
C．put down
D．put forward
答案
答案：D
考查短语辨析。put on穿；put out出版，扑灭；put down * * ；put forward提出。Put forward a suggestion提出建议。根据句意选D。
