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【单选题】
If a drought destroyed half of the U.S. garlic crop at a time when the health benefits of garlic were being well-publicized, economists would expect that in the market for garlic ( )A.
quantity exchanged would rise but the change in price is uncertain without further information.
B.
price would rise but the change in quantity exchanged is uncertain without further information.
C.
both price and quantity exchanged would rise.
D.
price would rise and quantity exchanged would fall
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【简答题】简述操作系统的定义和作用。
【简答题】保护消费者合法权益的法律有( )。 A《消费者权益保护法》 B《产品质量法》 C《食品卫生法》 D《广告法》
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