单选题
英语四级
2017-12-16
Questions 3 and 4 are based on the news report you have just heard.
第3题答案________
A．Finding cheaper ways of highway construction.
B．Generating electric power for passing vehicles.
C．Providing clean energy to five million people.
D．Testing the efficiency of the new solar panel.
参考答案
C
答案解析
暂无解析
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