题目内容
下列图形中箭头所指的“点”违背哪条Westgard基本质控规则
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One disadvantage of using robots is that they consume__________.
A too much energy
B based on American designs
C they are too costly
D they are not reliable
E good to quality control
F free of charge
生态农业将物质和能量多层次循环利用，下图（图3）中的①、②、③分别是 （）
We didn't know his telephone number, otherwise we______________ him.
[A] would have telephoned
[B] must have telephoned
[CJ would telephone
[D] had telephoned
What kind of person is most likely to catch a cold？
[A] The person who has a mild fever for a few days.
[B] The person who carries viruses capable of producing colds.
[C] The person who spends most of his time indoors.
[D] The person who spends most of his time outdoors.
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