When products made in factories______, they are thrown away as garbage.

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问题 When products made in factories______, they are thrown away as garbage.

选项 A、come to an end
B、are put to use
C、are used up
D、wear out

答案D

解析 本题考查词组辨析。wear out,用坏,穿破,如:The machine will soon wear out(这机器即将用坏);come to an end,结束;put...to use,投入使用;use up,用完。
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