单选题
Wireless waste from cell phones, pocket PCs, and music players ______ special problems because they have toxic chemicals in batteries and other components.
A. pose B. commit C. transport D. expose
A
B
C
D
【正确答案】
A
【答案解析】
pose造成,形成,提出问题。commit让犯错误,干坏事。transport传送,运输。expose揭露,暴露。
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