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【多选题】
关于菌的叙述,下列叙述正确的是:A.
多见于革兰阴性菌
B.
有普通菌性菌
C.
能直接用光学显微镜观察
D.
性菌与细菌的接合有关
E.
普通菌与细菌致病力有关
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【简答题】When she heard that her father was (er) ________ ill, she burst into tears. 2. Many scientists are in the hope that new ways of generating large amounts of energy will be (success) __________ deve...
【单选题】构成传染过程必须具备的三个因素是:
A.
传染源、传播途径、易感人群
B.
微生物、媒介、宿主
C.
病原体、环境、宿主
D.
病原体、人体和它们所处的环境
E.
病原体的数量、致病力、特异性定位
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【简答题】二.单项填空。 ( )1.The earth ( )a planet and it around the sun. A.are;go B.was;went C.is;go D.is;goes ( )2.There has been life ( ) the earth for hundreds of millions of years. A.in B.on C.of D...
【简答题】Listening test I I. Listen to the short passage twice and fill in the missing words. Some parts of the earth are more likely to have earthquakes than others. This is usually true of 1._____ areas be...
【简答题】三、单项填空。 ( )1.The earth a planet and it around the sun. A.are;go B.was;went C.is;go D.is;goes ( )2.There has been life the earth for hundreds of millions of years. A. in B.on C.of D.at ( )3.He ...
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