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【判断题】
如果只把左边关系R中要舍弃的保留就叫做连接(LEFT OUTER JOIN或LEFT JOIN)。A.
正确
B.
错误
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举一反三
【简答题】He had never given a speech to so many people, so he felt _________. A) excited B) stupid C) disappointed D) nervous
【单选题】He had never given a speech to so many people, so he felt ______.
A.
exciting
B.
stupid
C.
disappointed
D.
nervous
【单选题】He had never thought of it before, taking for granted the tie of their blood. (Para. 13)
A.
He didn’t think his father loved him because he had never given another thought to their relationship.
B.
He had never thought of the fact that his father loved him because he took the relationship of father and son as a matter of course. He had never given this another thought.
C.
He didn’t think his father loved him because he took the relationship of father and son as a matter of course.
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