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【单选题】
无差异曲线上任一点商品X和Y的边际替代率等于它们的( )。A.
价格之
B.
数量之比
C.
边际效用之比
D.
边际成本之比
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反馈参考答案：
举一反三
【单选题】下面程序段执行后, sum 的值为 int i,sum=0; for(i=0,sum=0;i<=10;i++,sum++);
A.
10
B.
11
C.
12
D.
14
【简答题】D1—question 1. A. On the phone. B. In the office. C. In the meeting. D. In the restaurant. D1—question 2. A. TV. B. Poster on bus stop. C. Radio. ...
【简答题】D1—question 1. A. countryside B. Big cities C. Old towns D. Seashore D1—question 2. A. 4000yuan . B. 5000yuan. C. 4500yuan. D. 6000yuan.
【单选题】Part B. Exercise 1. question 2.
A.
in Peter's home
B.
in the street
C.
in the gym
D.
on their way to the gym.
【单选题】Part B. Exercise 1. question 1.
A.
he is an active sportsman.
B.
he is a keen cyclist.
C.
he enjoys playing baseball.
D.
he exercies regularly.
【简答题】D1—question 1. A. About 4 years. B. About 5 years. C. About 2 years. D. About 3 years. D1—question 2. A. Body lotion. B. Hair gel. C. Shampoo. D. Hair conditioner.
【单选题】下面程序段执行结束后变量i的值为（） For I=2 To13 Step3 Print i Next i Print"i="；i
A.
11
B.
13
C.
14
D.
17
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