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【单选题】
When limitations were in effect on nuclear-arms testing, people tended to save more of their money, but when nuclear-arms testing increased, people tended to spend more of their money. The perceived threat of nuclear catastrophe, therefore, decreases the willingness of people to postpone consumption for the sake of saving money. The argument above assumes thatA.
the perceived threat of nuclear catastrophe has increased over the years.
B.
most people supported the development of nuclear arms.
C.
people's perception of the threat of nuclear catastrophe depends on the amount of nuclear-arms testing being done.
D.
the people who saved the most money when nuclear-arms testing was limited were the ones who supported such limitations.
E.
there are more consumer goods available when nuclear-arms testing increases.
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皮皮学刷刷变学霸
举一反三
【多选题】（107~110题共用备选答案）
A.
去甲肾上腺素
B.
乙酰胆碱
C.
肾上腺素
D.
多巴胺
E.
5 -羟色胺 107．交感神经节前纤维末梢释放的递质是 108.大部分交感神经节后纤维末梢释放的递质是 109.中脑黑质神经元释放的递质主要是 110.交感舒血管纤维末梢释放的递质是