Astronauts are___________ all kinds of tests before they are actually-考呗网题库移动版

单选题 Astronauts are___________ all kinds of tests before they are actually sent up in a spacecraft.

A．inclined to
B．subjected to
C．prone to
D．bound to

参考答案B

解析:

单选题 Retirement is obviously a very complex __________ period; and the earlier you start planning for it, the better.

A．transition
B．transaction
C．transmission
D．transformation

单选题 His body temperature has been __________ for 3 days, the highest point reaching 4,0.5 degree centigrade.

A．uncommon
B．disordered
C．abnormal
D．extraordinary

单选题根据下面材料，回答题.

When a snake meets a potential enemy, its primary device is

A．avoiding any observation.
B．finding a safe shelter.
C．giving a warning threat.
D．starting a quick attack.