What does Terry say about the garbage in New York？
A. Smelly.
B. Scattered.
C. Put in bags and boxes.
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The author thinks living alone is disastrous mainly because singledom is ______.
A. harmful to people's life
B. destructive to our ecosystem
C. dangerous to plants and animals
D. unworkable in our society
假设某个小国的总量生产函数为Y=AK0.3L0.7。当该国的全要素生产率增加一倍后，该国的劳动边际产出将()。
A. 增加不到一倍
B. 增加一倍
C. 减少不到一倍
D. 减少一倍
Possessing a car gives a much greater degree of ______, enabling the driver to move around
A. traveling
B. movement
C. mobility
D. freedom
Other scientists were skeptical of the report because ______.
A. cancer takes a long time to develop
B. single genes were not thought to cause cancer
C. genes would take years or even decades to bring about cancer
D. the researcher's report was too simple
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