Section A Directions:In this
section, there is a passage with ten blanks. You are required to select
one word for each blank from a list of choices given in a word bank following
the passage. Read the passage through carefully before making your choices. Each
choice in the bank is identified by a letter. Please mark the corresponding
letter for each item on Answer Sheet 2 with a single line through the centre.
You may not use any of the words in the bank more than once. Questions 47 to 56 are based on the following
passage. There is progress toward a possible treatment
for lung diseases such as SARS ( severe acute respiratory syndrome ).
Researchers have learned more about how the SARS virus works: it
(47) with a system in the body that uses enzymes (酶) to
control blood pressure and fluid balance. Scientists say the virus (48)
to an enzyme known as ACE-two. The virus blocks the enzyme,
permitting fluid to enter the lungs. A team from Europe and Asia
reported the (49) in Nature Medicine. Doctor Josef Penninger
of the Institute of Molecular Biotechnology in the Austrian Academy of Sciences
was the (50) writer of the report. The discovery could lead
to a new (51) of treating not just SARS but also other
diseases that can cause lung failure. These include avian flu (禽流感) and
influenza in humans. The first (52) of SARS
were discovered in Guangdong province, in southern China, in November of 2002.
SARS was not (53) as a worldwide threat until March of
2003. The disease spread to 26 countries, most of them in the Asia-Pacific area.
An estimated 8 000 people had SARS. More than 770 of them died, or about
10% , a (54) high rate. The World Health
Organization warned people not to travel to (55) areas. The
(56) hurt international travel and business. The WHO says
the disease stopped spreading by July of 2003. As a result of SARS, the health
agency got new powers to act before a government officially announces a
crisis. A) means B)
alternative C) attaches
D) crisis E) cases
F) associates G) major
H) awful I) relatively
J) findings K)
optimistically L) identified M) interferes
N) distributed O)
affected