题目内容

- Mum, could you buy me a dress like this?- Certainly, we can buy one than this, but this.

A. a better; better than
B. a worse; as good as
C. a cheaper; as good as
D. a more important; good as

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The smile on my father’s face showed that he was ______ with me.

A. sad
B. pleased
C. angry
D. sorry

Jane looks so _______ today because she has got an “A” in her maths test.

A. happy
B. happily
C. angry
D. angrily

简述新古典经济增长模型中，储蓄率和人口增长对经济的影响。

设一个经纪人的人均生产函数为y=k1/2。如果储蓄率为28%，人口增长率为1%，技术进步速度为2%，折旧率为4%，那么该经济的稳态产出为多少？如果储蓄率下降到10%，而人口增长率增长到4%，那时该经济的稳态产出为多少？