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【简答题】
遗传素质为人的发展提供了可能性。 （ ）
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皮皮学刷刷变学霸
举一反三
【简答题】简述工作面前后支承压力分布规律
【单选题】My train arrives in Beijing at eight o’clock tonight. The plane I would like to take from there _______ by then.
A.
has left
B.
will have left
C.
will leave
D.
had left
【单选题】----when are you going off for your holiday? ----My plane ______ at 9:20, so I must be at the airport by 8:20.
A.
took off
B.
has taken off
C.
is taking off
D.
would take off
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