THE WORD “THEY” IN LINE 13 REFER TO ________.A. GREENHOUSE GASESB....

9. The word “they” in line 13 refer to ________.

A. greenhouse gases

B. fossil fuels

C. cars

D. distances

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 part of ____ (10) daily life. It's a very fast

and convenient way to get information. People use the internet ____ (11) many purposes :

education, communication, entertainment and commerce. The internet ____ (12) people

communicate with friends and relatives by means of email or chatting. ____ (13), the

internet has limitations . It is time-consuming and costly. It is also dangerous because of

viruses and bad programs. Besides, people ____ (14) use Internet sometimes have to

suffer various risks such as spam or ___ (15) junk mail and personal information leaking.

So , while enjoying surfing, be alert .