问题补充：
Microblogs experienced rapid growth in in China, with the number of microblog Operators, users and visitors several times.
A. to increase
B. increased
C. increasing
D. increase
答案：
A. to increase
B. increased
(答案→)C. increasing
D. increase
解析：考查with复合结构。The number与Increase构成主动关系，使用doing的形式。句意：随着微博用户访客等的迅速增加，在的中国微博经历了迅速的增长。
