题目内容
(请给出正确答案)
[单选题]
Economics, several courses of which I have taken thus far,()to be difficult but useful for almost all students。
A.prove
B.havebeenproved
C.proves
D.areproved
提问人:网友mark0708
发布时间:2022-01-07
A.prove
B.havebeenproved
C.proves
D.areproved
A、rises; rises
B、rises; falls
C、falls; rises
D、falls; falls
A、9%
B、10%
C、11%
D、12%
A.imposed
B.pitched
C.inserted
D.plunged
A.income
B.allowances
C.pay
D.wages
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