问题补充:
people in the world are sending are receiving e-mails every day.
A. Million of
B. Many millions of
C. Several millions’
D. Several millions
答案:
A. Million of
(答案→)B. Many millions of
C. Several millions’
D. Several millions
解析:million前需用数表确切数量,而不用many这类词,但可说many millions of(上百万的)