题干
people in the world are sending and receiving e-mails every day.
A：Millions of
B：Many millions of
C：Several million of
D：Several millions
答案(点此获取答案解析）
A
people in the world are sending and receiving e-mails every day.
A：Millions of
B：Many millions of
C：Several million of
D：Several millions
综合评级为“B-”。我国学者也认为：“中美关系应该在B和C之间，过好或者过坏都不正常。”中美两国关系之所以如此，其主要原因是