Australian scientists have designed a system which uses microwaves to________plastic into an environmentally friendly by-product

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问题 Australian scientists have designed a system which uses microwaves to________plastic into an environmentally friendly by-product.

选项 A、recompose
B、depose
C、discompose
D、decompose

答案D

解析 本题考查动词辨析。根据“use microwaves to…”(使用微波……)和plastic(塑料)可知,所填动词能体现使用微波处理塑料的含义。选项中,只有decompose(使分解)符合语义,故答案为D项。recompose意为“改组,重写,重新安排”;depose意为“罢免,废黜”;discompose意为“扰乱,使不安”。
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