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【单选题】
may 和 might的用法区别之一,表示允许 Passengers ( ) take the hazardous article on the train.A.
may not (=must not)
B.
might not
C.
might
D.
may
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反馈参考答案：
举一反三
【多选题】循环经济主要有三大原则，简称“3R”原则，每一个原则对循环经济的成功实施都是必不可少的。下列选项中属于原则的有（）。
A.
减量化（Reduce）
B.
再使用（Reuse）
C.
再循环（Recycle）
D.
以上说法都不正确
【单选题】Students are warned of the consequences of falling behind because if they do ______ .
A.
they will have to leave college
B.
they will never be able to catch up
C.
they will have to work much harder afterwards
D.
their term papers will not be accepted
【单选题】Students are warned ________ in the exam, otherwise they will be severely punished.
A.
to not cheat
B.
not cheating
C.
not be cheated
D.
not to cheat
【单选题】SpeakerA: Do you often go to the movies? SpeakerB :_____________________
A.
They often go to the movies on weekends.
B.
I don't go to the movies.
C.
No, but I often go dancing.
【单选题】The students are warned not to talk about anything ______ to the accident that happened the other day in the school.
A.
relevant
B.
similar
C.
opposite
D.
suitable
【多选题】关于白喉抗毒素的叙述正确的是
A.
用于白喉的特异性治疗
B.
用于白喉的紧急预防
C.
由白喉类毒素制备
D.
使用前必须做皮肤过敏试验
E.
不能用于白喉棒状杆菌耐药株引起的感染
【简答题】简述时滞试验的定义和步骤。
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