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【单选题】
设向量AB=(-1,2,2),点B的坐标为(2,-1,3),则A的坐标为( ).A.
(3,3,1)
B.
(3,3,-1)
C.
(3,-3,1)
D.
(1,-3,1)
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反馈参考答案：
举一反三
【简答题】先导化合物
【单选题】I feel ____ to accept her kind offer.
A.
tempted
B.
attempted
C.
attained
D.
attended
【简答题】先导化合物
【单选题】—I think that every need of the customer should be attended to. —________.
A.
I'd love to
B.
I'm with you on that
C.
It's my pleasure
D.
It's up to you
【单选题】— Why is your father in such a hurry? — He _____ for Beijing to attend an important meeting. The plan _____ at six. [ ]
A.
will leave; leave
B.
is leaving; leaves
C.
is leaving; will leave
D.
leaves; is leaving
【单选题】It is the most instructive lecture that ________since I came to this school.
A.
attended
B.
had attended
C.
am attending
D.
have attended
【单选题】在同一总体中随机抽取多个样本，用样本均数来估计总体均数的95%可信区间，可靠性较好的是
A.
均数大的样本
B.
均数小的样本
C.
标准差小的样本
D.
标准误大的样本
E.
标准误小的样本
【简答题】先导化合物
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