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【单选题】
设有下列命题:级数 收敛的: (1)若 收敛,则 收敛 (2)若 收敛,则 收敛 (3)若 ,则 发散 (4)若 收敛,则 , 都收敛 则以上命题中正确的是A.
（1）（2）
B.
（2）（3）
C.
（3）（4）
D.
（1）（4）
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举一反三
【单选题】It’s said that he’s looking for a new job, one ___ he can get more money to support his family.
A.
when
B.
where
C.
that
D.
Which
【单选题】“ It’s said that he is a wise leader.” “Oh, no, he is _____ but a wise leader.”
A.
anythig
B.
anyone
C.
anybody
D.
anywhere
【单选题】“It’s said that he is a wise leader.” “Oh, no, he is _____ but a wise leader.”
A.
anything
B.
anyone
C.
anybody
D.
anywhere
【单选题】“It’s said that he is a wise leader.” “Oh, no, he is _____ but a wise leader.”
A.
anything
B.
Anyone
C.
anybody
D.
anywhere
【单选题】It’s said that when he is alone, he always drinks a ____amount of alcohol to get himself drunk.
A.
strong
B.
massive
C.
big
D.
large
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