设f(x)为连续函数,()。
参考答案:1
解析:
—Bad luck! It’s too late.
—It doesn’t matter. The concert for only a few minutes. You can’t miss it.
A.has begun
B.has been on
C.began
D.lasted
—How many years has life been on earth?
— years, I think.[ ]
A. 5 millions
B. 5 millions of
C. Million of
D. Millions of