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【单选题】
--- “Fail to do your homework again?” ---“Sorry, I ____ something else and didn’t hear your assignment.”A.
thought
B.
had thought
C.
was thinking
D.
have been thinking
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举一反三
【单选题】______ a little more tolerant our world would be a better place.
A.
Were people
B.
If people would
C.
People were
D.
Would people
【单选题】298 K 时, φ y (Au + /Au) = 1.68 V , φ y (Au 3+ /Au) = 1.50 V , φ y (Fe 3+ /Fe 2+ ) = 0.77 V 则反应 2Fe 2+ + Au 3+ = 2Fe 3+ + Au + 的平衡常数 K y 值为:
A.
4.33×10 21
B.
2.29×10 -22
C.
6.61×10 10
D.
7.65×10 -23
【单选题】If the whole surgery______ beforehand carefully, there would have been a better result.
A.
was planned
B.
has been planned
C.
had been planned
D.
were planned
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