一个家庭的子女教育财务安排的时间弹性是非常低的。 ()
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水泥混凝土路面缩缝的切缝时间随混凝土的组成和性质、施工时的气候条件等因素而变化。 ()
A. 正确
B. 错误
A．Someone broke into the woman's house and stole some jewels.B．She knew how the burglar
A. Someone broke into the woman's house and stole some jewels.
B. She knew how the burglars broke into her house.
C. She didn't know what were stolen.
D. Policemen would arrive next day.
【B12】
A. until
B. before
C. since
D. when
【B15】
A. placed
B. put
C. hidden
D. lain
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