53. In 1989, a(n) law was passed by the United Nations to stop people putting waste into s

发布时间：2020-08-16 06:38:39


53. In 1989, a(n)     law was passed by the United Nations to stop people putting waste into sea.
A. national
B. local
C. internet
D. International

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A. national
B. local
C. internet
(答案→)D. International
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