What maxim is flouted in such extreme examples of tautologies as "Boys are boys"， and"Lies are lies"？
A. The maxim of quantity.
B. The maxim of quality.
C. The maxim of relevance.
D. The maxim of manner.
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Criticism and self-criticism are necessary __________they may help us to find out and correct our mistakes.
A. by that
B. at that
C. on that
D. in that
It was not until dawn__________ the snowcapped peak in the remote area in Tibet.
A. that they sighted
B. did they sight
C. that they did not sight
D. had they sighted
The children lined up and walked out（）.
A. in person
B. in private
C. in order
D. in progress
居社区获得性肺炎首位的是支原体肺炎。()
参考答案：错误
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