Page 34 - 2021Newintakewithcover130820

2021年新生入学指南
32
NEW INTAKE

19. A. finally B. ultimately C. successfully D. consequently

20. A. fidgeting B slithering C. squirming D. clambering

PART 3 READING 15marks
Passage 1 MCQ 5marks
Read the passage below and choose the best answer.

Leeches are worm-like creatures which live in damp, dark places. These creatures attach
themselves to any passing human or animal and begin to suck blood from them. Usually
the person has no idea that he has a leech on him until some time later when he or his
friends notice a patch of blood on his clothing.

Several decades ago, Dr Roy Sawyer, an American researcher recognised the potential
benefits of “leech therapy” and started one of world’s first leech farms. In Dr Sawyer’s
farm, leeches are fed on a steady diet of blood from the local abattoirs. These leeches are
often sold to scientists who want them for research. Some, however, are bought by doc-
tors for use in surgery because leeches have been used successfully in operations where
patients had to have their fingers stitched back on. Today, the company provides tens of
thousands of leeches every year to hospitals in dozens of countries.

Leeches release certain chemicals into their victim’s bloodstream as they suck blood
from them. Doctors have found that some of these chemicals seem to help restore dam-
aged cells in the body. Others encourage the blood to flow more freely. It is these chemi-
cals that doctors find useful in surgery.

Not long ago, Dr Sawyer’s leeches came to the rescue of a five-year-old boy in the
United States. The boy’s ear had been ripped off by a dog. Surgeons stitched on the boy’s
ear but there was still a problem- the blood would not flow from his body to stitched-on
ear. A batch of leeches was flown form Wales to America. Two were attached to the boy’s
ear. To the doctor’s delight, the leeches was immediately began to swell up with flood.
This showed that they were causing the blood to flow back to the boy’s ear.

Dr Sawyer feels that there is bright future for the leeches as life-savers, and he thinks
that they will offer hope to people who suffer from heart attacks.