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【单选题】
兴奋性突触后电位发生时,突触后膜膜电位的特征是A.
超极化
B.
去极化
C.
反极化
D.
复极化
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
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【单选题】Judging from Paragraph 2, the online environment can be less intimidating because online students _____.
A.
have unique qualities that best fit the online environment
B.
are not bothered by other students
C.
are allowed more time to think about the information before replying
D.
can answer questions without other people reading what they write
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【单选题】Q2: What can we know from the short dialogue?
A.
The woman doesn't accept the man's apology.
B.
The woman wasn't bothered by the delay.
C.
The man didn't realize the woman was waiting.
D.
The man waited a long time for the bus.
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