问题

We began to open to the outside world in the late 1970s.,there have been great changes in the country.

A:As a result of
B:As a result
C:First of all
D:After all

正确答案是：

同类题型

He taught some English.

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I’m sorry to have kept you waiting.—Oh, not at all. I ________here only a few minutes.

How long can he ______ this book —Two weeks.