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【单选题】
常用于判断细菌有无鞭毛结构的是A.
普通肉汤培养基
B.
半固体培养基
C.
琼脂平板
D.
选择培养基
E.
血清肉汤培养基
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皮皮学刷刷变学霸
举一反三
【单选题】All the teachers and students ______ , the ceremony was declared open.
A.
had arrived
B.
arrived
C.
having arrived
D.
arriving
【简答题】青霉素皮试液的浓度及皮试注入体内的剂量分别为 (5.0分)A. 500u/ml 50u B. 80u /ml 50u C. 50u/ml 500u D. 500u /ml 20u
【单选题】Sally thinks that people are usually unhappy at work because
A.
their salaries are too low.
B.
there are too many forms to complete.
C.
there is too much management control.
【判断题】《奥列佛 · 退斯特》的主要成就 , 是通过奥列佛由孤儿到窃贼的经历 , 抨击了刚刚通过的英国新济贫法的虚伪, 暴露了维多利亚“盛世”下骇人听社会罪恶。
A.
正确
B.
错误
【单选题】No sooner ______ home than my grandfather asked me to read the newspaper for him.
A.
I arrived
B.
I had arrived
C.
did I arrive
D.
had I arrived
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