【咖啡还是茶】In first paragraph , the phrase 'be down to' most closely means:
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【咖啡还是茶】What is the conclusion of the news research?
A. Tea is better than coffee.
B. People don't like coffee because coffee is too bitter
C. People‘s taste genes partially play a role in how much coffee, tea or alcohol we drink.
【咖啡还是茶】How many specific variations are mentioned in the text?
A. Four
B. Three
C. Two
D. One
【咖啡还是茶】Why is HIV so horrible?
A. Because it can jump the species barrier to infect humans.
B. As of now, AIDS has not been cured.
C. HIV remains a stubborn adversary.
【咖啡还是茶】The difficulty in dealing with HIV lies in:
A. HIV will proliferate and replicate.
B. HIV-infected cells are able to “hide” by entering a resting phase .
C. HIV can spread through the air
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