53. In 1989, a(n) _______law was passed
题型:选择题
问题:
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
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