______(49)A. Computer programs allow spammers to

______(49)

A. Computer programs allow spammers to send hundreds of millions of e-mails almost instantly.

B. This question is troubling for individuals and companies as well.

C. But now it seems that every time I check my e-mail,I have an endless series of advertisements and other correspondence that do not interest me at all.

D. Spammers should be fined,and perhaps sent to prison if they continue to disturb people.

E. And their employees are thus unable to communicate effectively.

F. Spamming is more serious in China than in America.