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

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

admin2018-01-16  46
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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