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【单选题】
在等差数列{a n }中,首项a 1 =0公差d≠0,若a k =S 6 ,则k的值为(  )
A.
15
B.
16
C.
17
D.
18
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【单选题】A) Because only a few African-American actors are nominated. B) Because only a few white actors are nominated. C) Because all the acting nominees are African-Americans. D) Because all the acting nomin...
A.
Because only a few African-American actors are nominated.
B.
Because only a few white actors are nominated.
C.
Because all the acting nominees are African-Americans.
D.
 Because all the acting nominees are white.
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A.
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B.
成长阶段
C.
成熟阶段
D.
衰退阶段
【判断题】Foreign fair organizers are superior to their Chinese counterparts only because they are more experienced.()
A.
正确
B.
错误
【简答题】[A] because [B] so [C] even [D] only
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