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【判断题】
我国在水文频率分析中选用皮尔逊III型曲线,是因为已经从理论上证明皮尔逊III型曲线的概率分布规律。()A.
正确
B.
错误
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A.
30
B.
50
C.
0
D.
175
【单选题】The reason for his success is________he worked hard.
A.
why
B.
for
C.
that
D.
because
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【单选题】The reason he has made such great progress is _______ he has never wasted his time.
A.
because
B.
why
C.
that
D.
what
【单选题】The reason for his success is ______ he worked hard.
A.
Why
B.
for
C.
that
D.
Because
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