5. China has made great progress in the sun’s rays as a source of energy.A. harnessB. harn

发布时间：2020-08-16 13:05:02


5. China has made great progress in      the sun’s rays as a source of energy.
A. harness
B. harnessing
C. harvest
D. harvesting

网友回答

A. harness
(答案→)B. harnessing
C. harvest
D. harvesting
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