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【多选题】
在两部门经济中,如果消费函数是 C=300+0.8Y ,投资是 500 ,则( )A.
边际储蓄倾向是 0.2
B.
投资乘数是 4
C.
投资乘数是 5
D.
均衡收入是 1000
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【单选题】He had a ____ look in his eyes. He must have been shocked. A) empty B) bare C) blank D) hollow
A.
empty
B.
bare
C.
blank
D.
hollow
【单选题】Why does the author say that the knowledge of the shapes and habits of wild animals was important to our ancestors?
A.
Because they loved animals so much.
B.
Because animals were the frequent subject of their paintings.
C.
Because they needed them to form. a religion.
D.
Because they wanted to live in safety, preventing themselves from being hurt by animals.
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