单项选择题

If this kind of machines had been invented earlier ,much more labor would have been saved.

A．假如这种机器被发明得更早一点的话，那么更多的劳动将会已经节省下来了。
B．如果人们早一点发明这种机器，人们就不用干更多的劳动。
C．一旦这种机器更早一点创造出来，就需要更多的劳动力。
D．假如这种机器发明更早的话，那么更多的劳动力已经节省下了。
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单项选择题
Why do some people fell that husbands should pay their wives for their housework
A．Because wives' work at home has its value.
B．Because wives can't qualify for social security.
C．Because husbands are employers.
D．Because raising a family needs money.
单项选择题
The expression full-time housewives in paragraph 2 means______.
A．wives staying at home 'doing housework
B．wives who can't do any housework
C．wives working outside home sometimes
D．wives who don't like to stay at home
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