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【单选题】
结核病最重要的传染源是A.
原发性肺结核
B.
浸润型肺结核
C.
急性粟粒性肺结核
D.
慢性血行播散型肺结核
E.
慢性纤维空洞型肺结核
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【简答题】设函数 均可导,且同为 的原函数,且有 ,则
【简答题】Jamie was born in a small village in the north of England. He is nine years old. He likes playing basketball very much. When he is free, he always plays basketball with his friends in the open air. So...
【简答题】.It was nine years
ago ( ) Sir
Alfred returned America.A. that B. when that C. when D. since
【单选题】The History of the English DictionaryIn 1746, Samuel Johnson began to work on his most famous book, the Dictionary of the English Language. It took him nine years to complete and in that time, he wrot...
A.
was older than Johnson by twenty-one years
B.
helped Johnson to get the dictionary writing job
C.
was a sick woman
D.
died before the dictionary was completed because she was too old
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