Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks.
The Internet has rapidly developed and become park of our daily life. It’s a very fast and convenient (16)...............to get information. People (17).................the Internet for many purposes: education, communication, (18)..................and commerce. The (19).................help people communicate with friends relatives by (20).................of mail or chatting.
However, the Internet has limitations. It is time (21)..................and costly. It is also dangerous (22)..................of (23).............. and bad programs. On the other hand, the Internet users sometimes have to suffer various risks such as spam or (24)......................junk mail, and personal information leaking (25).................., while enjoying surfing, be alert!
(16)........................
