THE WORD “THIS” IN THE PASSAGE REFERS TO _________ A. POLLUTION...

27. The word “This” in the passage refers to _________

A. pollution

B. oil

C. factory

D. sea

Read the following passage and mark the letter A, B, C, or D to indicate correct word for each of the

blanks

SARS (Severe

Acute

Respiratory

Syndrome) is a deadly disease. Scien haven't found the (28)...of this

disease. SARS is dangerous because it develops quickly. Patients normally (29)...a high fever, a sore throat,

and cough. Their body temperature is (30)...38°C.

Antibiotics cannot cure SARS, and scientists are looking for a (31)... to prevent the disease. Before they

can find one, it is important to have a (32) ...lifestyle. You should keep fit, have plenty of fresh air, and eat

lot foods with vitamin C.