There are visitors in Hangzhou every year.A. million ofB. millions ofC. millionD. millione

问题补充：

There are visitors in Hangzhou every year.

A. million of

B. millions of

C. million

D. milliones of

答案：

A. million of

(答案→)B. millions of

C. million

D. milliones of

解析：当million与具体数字连用是，million不能加s，也不能与of连用；当million不与具体数字连用是应该用millions of表示”数百万的”。所以本题选B。