单项选择题

If the radio waves had reached our planet one hundred years before, we would have______.

A．sent an immediate answer
B．sent an alarm against extraterrestrial attack
C．sent a short reply
D．sent no answer
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单项选择题
The author states that bringing up children ______.
A．is mainly the mother's job
B．is among the duties of the father
C．is the job of schools and churches
D．involves a partnership of equals
单项选择题
The danger in the sharing of household tasks by the mother and the father is that______.
A．the role of the father may become an inferior one
B．the role of the mother may become an inferior one
C．the children will grow up believing that life is a battle of sexes
D．sharing leads to constant arguing
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