By "alcohol is a dietary Jekyll and Hyde", the author means
A. drinking alcohol can be of both advantage and disadvantage.
B. alcohol is necessary for daily diet.
C. Jekyll and Hyde is a brand of alcohol.
D. drinking alcohol can also be very dangerous.
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Honda is mentioned in the second paragraph to suggest that
A. Traffic Message Channel is established in Japan.
B. Japan is in the lead in solving traffic problems.
C. Honda demonstrated how VICS can be used.
D. Only few people can afford to enjoy this service.
What can be inferred from the words of Dave Forney？
A. Norwalk-like viruses caused horrors among people.
B. Norwalk-like viruses can be eliminated by CDC.
C. Norwalk-like viruses casually appear on vessels.
D. Norwalk-like viruses co-exist with gastrointestinal illness.
A．In factB．To sum upC．GenerallyD．By the way
A. In fact
B. To sum up
C. Generally
D. By the way
What does the author mean by saying the "recent discoveries are modest"？
A. People stop searching for oil.
B. People decrease the production of oil.
C. People use less oil than they used to.
D. The oil exploitation is limited.
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