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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热门试题

单项选择题

Once you gain confidence in yourself，you can judge truth and error with your own mind（）

A．你万一获得了自信心，就能用自己的头脑判断真理和谬误。
B．你一旦对自己有了信心，就能用自己的心去判断正确和谬误。
C．一旦你获得了自信，你就能用自己的大脑评价真理和谬误。
D．一旦你有信心，你就用心灵来判断真理和谬误。

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.