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题目更新时间：2023/4/3

重症肺炎

答案

由于小儿体质和致病菌的毒力不同，肺炎的轻重程度也不同。轻症肺炎时致病菌及毒素仅侵犯肺部，小儿只有咳嗽、气喘、痰多等呼吸道的症状。重症肺炎时病菌和毒素不仅侵犯肺部，还可以侵犯心脏、大脑和胃肠

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第1题

-We haven’t heard from Jane for a long time.( ) -What _____ to her?(本题1.5分) A. was happening B. to happen C. has hap

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第2题

Tom ______ to America with his parents. They_____ back in two weeks.( )(本题1.5分) A. have gone; will come B. has gone; w

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第3题

Mary ________ show us her new dictionary . ( )(本题1.5分) A. has asked to B. was asked to C. is asked D. asks to

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第4题

He arrived____ London ____ a cold winter night.( )(本题1.5分) A. at; at B. in; on C. in; in D. \; on

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