A. ISLAND B. ESCALATOR C. SYSTEM D. DISTRIBUTEREAD THE FOLLOWING PA...

5. A. island

B. escalator

C. system

D. distribute

Read the following passages and choose the correct answer to each question.

What is the cause of chronic fatigue syndrome? Past research has suggested a link to the

Epstein-Barr virus, but now many scientists are questioning that connection. New findings

suggest that the Epstein-Barr virus is not a primary cause, but it may still trigger the illness.

The symptoms may be due to a variety of things, rather than just one. Still, some

researchers are sticking with the idea of Epstein-Barr virus causing the illness. They say

that it is premature to make such a judgement.

Chronic fatigue syndrome has been dubbed the “yuppie disease” by some since it is often

diagnosed in professional women in their twenties and thirties. It may be the result of

never recovering completely from illnesses such as the flu. Though the cause is not clear,

the symptoms are. To be a fatigue sufferer, one must have the debilitating illness for more

than six months and must exhibit at least eight of the eleven symptoms, including sore

throat, mild fever, and muscular aches.