A．thereforeB．whenC．becauseD．nonetheless
A. therefore
B. when
C. because
D. nonetheless
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Paragraph 1 supports which of the following statements about painting in Europe？
A. It is much older than painting in Australia.
B. It is as much as 28,000 years old.
C. It is not as old as painting in southern Africa.
D. It is much more than 30,000 years old.
对可能影响农产品质量安全的兽药、饲料和饲料添加剂、肥料、兽医器械，依照有关法律、行政法规的规定实行()制度。
A. 强制
B. 自律
C. 罚款
D. 许可
What was one feature of the Earth that contributed to the runaway freeze 750 million years
A. Carbon-dioxide levels in the oceans were low.
B. The continents were located close to the equator.
C. The movement of glaciers carried away large quantities of rock.
D. The level of greenhouse gases in the atmosphere was high.
What does the professor imply about the effect of increasing imports？
A. It will eventually result in a decrease in exports.
B. It is not necessarily bad for the economy.
C. It creates domestic economic problems that are easily solved.
D. Its impact on the economy is immediately apparent.
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