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【单选题】
对于有人逗留活动的平屋顶,通气管出屋面()。A.
1.2m
B.
1.5m
C.
2m
D.
1.8m
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反馈参考答案：
举一反三
【简答题】. big the tree is!
【单选题】听力原文：M: I'll take three cases and will you please deliver them and put them down to my account? W: I'll as usual, sir. What does the man mean?
A.
He will not pay in cash.
B.
He will put down three cases.
C.
He will take three cases home.
D.
He will count up m three cases.
【简答题】As a school librarian，I’m often asked what books are most appropriate for teaching particularconcepts．As the mother of a toddler ，I’m now teaching my son to recognize letters and learn thealphabet．Boa...
【判断题】Professors' teaching styles differ greatly, but in most cases, the approach is collective and collaborative.
A.
正确
B.
错误
【单选题】( )21. ________around the office,the foreign visitors visited the teaching building.
A.
Having shown
B.
Showing
C.
Has shown
D.
Having been shown
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