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【判断题】
数字证书提供了一种在Internet上验证身份的方式,人们可以在交往中用它来识别对方的身份.A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【单选题】Anita: I saw Nora in the teacher's office this morning. Do you know _______ she was there? Brian: She cheated on tests. [ ]
A.
how
B.
if
C.
when
D.
why
【简答题】Do you know what the driver was?
【单选题】– Do you know of Guo Mingyi? - Yes. He is an ordinary (普通的) worker c helps many poor children in China. We should follow his example.
A.
that
B.
which
C.
whom D Whose
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