单选题

{{I}} Questions 27 and 28 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.{{/I}}

单选题 What is discovered by scientists at Brown University?

A、 The inhibitor of the HIV transmission.
B、 An effective way to deliver AIDS drugs.
C、 A good strategy to prevent HIV transmission.
D、 Bacteria from yogurt may help fight HIV.

【正确答案】 D

【答案解析】[听力原文] 27-28 Scientists at Brown University in the Northeastern United States [27] discover that bacteria from yogurt can be made into a substance that helps fight HIV. Led by Professor Bharat Ramratnam, they modify the bacteria to cream cyanovirin—[28] a protein that protects the body from infection by microorganisms such as bacteria, viruses, and fungi. The hope is to use the bio-engineered yogurt bacteria as the active ingredient in a foam, cream or suppository that can be applied before sex to prevent HIV transmission.

单选题 Which of the following is TRUE about Cyanovirin?

A、 It is an active ingredient in a foam, cream or suppository.
B、 It is an active ingredient applied before sex to prevent HIV transmission.
C、 It is a protein that protects the body from infection by microorganisms.
D、 It is a drag used to prevent HIV transmission.

【正确答案】 C

【答案解析】[解析] 新闻提到，cyanovirin是一种能保护身体免受微生物感染的蛋白质。故答案为C。 [点睛] 事实细节题。预读关键词为ingredient((成分，因素)，protein(蛋白质)，drug(药物)。