China and the United States established diplomatic relations inA.February 1972.B.December

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China and the United States established diplomatic relations in

A.February 1972.

B.December 1978.

C.January 1979.

D.August 1982.

请帮忙给出正确答案和分析,谢谢!

热搜:做二进制逻辑运算:(xB2XORx57)AND(x96ORNOT(x7D)),