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There is progress toward a possible treatment for lung diseases such as SARS(severe acute respiratory syndrome). Researchers ha
There is progress toward a possible treatment for lung diseases such as SARS(severe acute respiratory syndrome). Researchers ha
admin
2010-09-10
50
问题
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【S1】______with a system in the body that uses enzymes(酶)to control blood pressure and fluid balance. Scientists say the virus【S2】______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【S3】______in Nature Medicine. Doctor Josef Penninger of the Institute of Molecular Biotechnology in the Austrian Academy of Sciences was the【S4】______writer of the report. The discovery could lead to a new【S5】______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【S6】______of SARS were discovered in Guangdong province, in southern China, in November of 2002. SARS was not【S7】______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【S8】______high rate.
The World Health Organization warned people not to travel to【S9】______areas. The【S10】______hurt international travel and business. The W. H. O. 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 I)relatively
B)alternative J)findings
C)attaches K)optimistically
D)crisis L)identified
E)cases M)interferes
F)associates N)distributed
G)major O)affected
H)awful
【S7】
选项
答案
L
解析
此处需要填入一个动词的过去分词或形容词,可选范围缩小到B、H、L、N和O;但是空白后有as a worldwide threat,alternative在逻辑上不合适,但是填入awful的话与后面的 until从句又相矛盾;distributed和affected不与as搭配,故可确定正确答案为L。
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0
大学英语四级
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