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【简答题】
设m、n是两条不同的直线， 、 是两个不同的平面，给出下列四个命题. ①若 ，则 ∥ ； ②若 ， ， ，则 或 ； ③若 ， ，则 ∥ ； ④若 ，则 . 其中正确命题的序号是 （把所有正确命题的序号都填上）.
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反馈参考答案：
举一反三
【简答题】请填写英文。 The name of inside name and address is the name of ( ).
【简答题】The name of inside name and address is the name of ( ).
【单选题】听力原文：M: Let me see. I have printed my family name, first name, date of birth, and address. Anything else? W: No. That' s all right. We' ll fill in the rest of it if you just sign your name at the bott...
A.
Having an interview.
B.
Talking with his friend.
C.
Filling out a form.
D.
Asking for information.
【单选题】听力原文：M: Let me see. I have printed my family name, first name, date of birth, and address. Anything else? W: No. That's all right. We'll fill in the rest of it if you'll just sign your name at the bot...
A.
Having an interview.
B.
Filling out a form.
C.
Talking with his friend.
D.
Asking for information.
【多选题】The ways in which you make your initial contact and an appointment to conduct business can range from a () to () or () or () .
A.
brief telephone call
B.
writing a formal letter of request
C.
the use of a “go-between”
D.
emissary
【单选题】“ Inside Name and Address ” refers to ______
A.
The sender ’ s name and address
B.
The receiver ’ s name and address
C.
Neither of the above
D.
Either A or B
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