选择题:“People from the ancient world sailed around Afric

题目内容:
“People from the ancient world sailed around Africa. They even reached America.” In your opinion, how WOULD the writer of the passage feel about these statements?
A. In his opinion, they are possible.
B. He does not believe them.
C. He has used this as an important fact to praise ancient civilization.
D. In his opinion, ancient explorers did not have the skills necessary for long journeys.
参考答案:

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下面的列的约束要求唯一性的是( ) A:Primary key约束 B:Foreign Key约束 C:UNIQUE约束

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14 经计算,本月已销产品的成本为27000元,予以结转。

14 经计算,本月已销产品的成本为27000元,予以结转。

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我国古代首次设立的中央教育行政机构是( )。A、国子监B、太学C、教育部D、文部省

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一个表建立了索引,当表中加入新记录时,索引中也增加相应的数据项,即 _ 更新。

一个表建立了索引,当表中加入新记录时,索引中也增加相应的数据项,即 _ 更新。

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