Question

There are ______________ birds there in the sky.    

A．Million of

B．five millions of

C．millions of

D．five millions

Answer 1

C

解析试题分析：句意：天上有成千上万的鸟。Millions of成千上万的，million要用复数；但在具体数字中例如five million五百万，million不用复数，故选C。
考点：考查数词。