2. 外语
  3. A、They are much stronger. B、They can’t be reused. C、They can’t break down in the earth. D、They are more durable but unnecessary.

A、They are much stronger. B、They can’t be reused. C、They can’t break down in the earth. D、They are more durable but unnecessary.

admin2022-12-08  106
问题
选项 A、They are much stronger.
B、They can’t be reused.
C、They can’t break down in the earth.
D、They are more durable but unnecessary.
答案D
解析
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大学英语四级

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