An A4 sized panel ( 太阳能板 ) put onto the back of a jacket costs __________ US$15. It could __________ a cellphone during a summer walk.
A. at most; work
B. at least; control
C. at least; fuel
D. at most; charge
正确答案：D
参考解析：暂无解析
An A4 sized panel ( 太阳能板 ) put onto the back of a jacket costs __________ US$15. It could __________ a cellphone during a summer walk.
A. at most; work
B. at least; control
C. at least; fuel
D. at most; charge
正确答案：D
参考解析：暂无解析
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