单项选择题

The history of cancer research has shown that

A．miracle cancer drugs often turn up unexpectedly.
B．the mass media can wore wonders.
C．curing cancers in mice is much easier than in humans.
D．animals and humans are similar in behaviour.

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单项选择题

The unprecedented interest in the cure of cancer was aroused by

A．a nationwide discussion of the topic.
B．an announcement by the National Cancer institute.
C．a report in the New York Times.
D．a medical news story in the Los Angeles Times.

单项选择题

Who will easily take every little strife as negative stress

A．Those who are in good moods,
B．Those who suffer from the flu.
C．Those who are successful.
D．Those who feel refreshed at every new turn.