单项选择题

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
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单项选择题
Some women ______ a good salary in a job instead of staying home, but they decided not to work for the sake of the family.
A．must make
B．should have made
C．would make
D．could have made
单项选择题
The_______family in Chinese cities now spends more money on housing than before.
A．normal
B．average
C．usual
D．general
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