题目内容
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
D
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Berners-Lee ________ the idea of the World Wide Web in 1989 while working in Switzerland.
A.caught up with | B.came up with |
C.looked forward to | D.put off |