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【单选题】
如图所示,小物体A与圆柱保持相对静止,跟着圆盘一起作匀速圆周运动,则A 受力情况是受A.
重力、支持力
B.
重力、向心力
C.
重力、支持指向圆心的摩擦力
D.
重力、支持力、向心力和摩擦力
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反馈参考答案：
举一反三
【单选题】How many thought groups are there in the sentence? "When we climbed to the top of the mountain we could see the ocean."
A.
2 thought groups
B.
3 thought groups
C.
4 thought groups
D.
5 thought groups
【简答题】In what sense is the word "beauty" used in the sentence "we are more wary of the enchantments of beauty" (para. 2)? And how do you interpret the sentence?
【单选题】Choose the best answer which is the nearest in meaning to the underlined word in the sentence We hope that you will be able to meet their requirement.
A.
come across
B.
encounter
C.
satisfy
D.
Need
【单选题】In the sentence “We must help the victims in the earthquake out of trouble", the italicized part is an additional explanation of
A.
the subject.
B.
the predicate
C.
the object
D.
the prepositional phrase
【判断题】Punctuation in the sentence: When the rain stopped, we continued to work in the field.
A.
正确
B.
错误
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