题目详情
单选题 What is the main idea of Paragraph 4
A. Laurence is the first person who has the idea of generating energy from footsteps
B. People have tried piezo-electric crystals to create a charge
C. Laurence takes a step at using people's weight of footsteps to generate energy
D. Generating clean energy is still the challenge of the whole world

学科:23级大学英语二B层
时间:2024-05-28 11:36:07
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