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【简答题】
设某一两部门的经济由下述关系式描述：消费函数C=100+0．8Y，投资函数为I=150-6r(r单位：％，下同)，货币需求函数为L=0．2Y-4r，设P为价格水平，货币供给为M=150。试求： (1)需求函数 (2)若P=1，均衡的收入和利率各为多少? (3)若该经济的总供给函数为AS=800+150P，求均衡的收入和价格水平。
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【简答题】A．He wanted to keep the farm as it was. B．He was eager to become a farm owner. C．He hoped to enlarge the forest on the farm. D．He was afraid the owner might change his mind.
【单选题】_____ in London, he was eager to see the Big Ben. [ ]
A.
To his arriving
B.
Once his arrival
C.
Upon his arrival
D.
The moment arrived
【简答题】党参功能________________、________________。
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