单选题
In what sense do e-books exert a negative impact on the environment?
A、
They are unable to be broken down into harmless products.
B、
They consume a lot of natural resources.
C、
They produce harmful gases.
D、
They are capable of being reused.
【正确答案】
A
【答案解析】
本题为细节理解题。文章第二段最后一句(e-books)…as well as creating nonbiodegradable trash意为“产生不可降解成无害物的垃圾”，nonbiodegradable的意思是“不可生物降解的”。
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