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【单选题】
伤（ ）A.
上先受之
B.
外先受之
C.
D.
E.
下先受之
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【单选题】Professors in the United States usually expect the students______.
A.
to know all the answers
B.
never to seek their advice
C.
to take the initiative and be independent
D.
to work together
【单选题】We offer an excellent education to our students. ________, we expect students to word hard.
A.
On average
B.
At best
C.
in return
D.
After all
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