问题补充:
The professor’s research finally proved to be , though he had spent a lot of money on it.
A. priceless
B. valuable
C. worthless
D. worthwhile
答案:
A. priceless
B. valuable
(答案→)C. worthless
D. worthwhile
解析:可联系答.案.网客服索取。
时间:2021-06-17 09:54:32
The professor’s research finally proved to be , though he had spent a lot of money on it.
A. priceless
B. valuable
C. worthless
D. worthwhile
A. priceless
B. valuable
(答案→)C. worthless
D. worthwhile
解析:可联系答.案.网客服索取。
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