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听力原文:M: I can't believe you're still driving around in this piece of junk. W: I can't afford to buy a new car. M: I'll bet you can't afford not to buy a new car. W: What do you mean by that? M: Have you ever kept a record of how much you spend to keep this car running? W: Well, no. But I'm sure maintenance costs are not as much as a monthly payment would be. M: Have you thought about your losses in pay from the days you've missed work because this thing won't start? W: It can't have been that much. M: There are also the tow truck fees the taxi and bus fares when you have to resort to taking them, and the amount you spend on fuel for this gas-guzzler of yours. W: All right. You've proved your point, but have you seen how much new cars cost these days? M: You don't have to buy a new car. W: Sure, I could buy a used car, but how could I be certain I wasn't getting a lemon? You know what used-car salespeople are like. M: Why not get a used company car? You know, companies such as those that rent cars must provide their customers with new ones. The cars are well maintained, and there isn't the wear and tear on them that there is on privately owned ones. W: I'll bet they're expensive. M: Not anything like a new one. W: Well, I'll give this new car idea of yours some thought. (23)
A.
In tow truck fees.
B.
In taxi fares.
C.
In fuel consumption.
D.
In monthly payments.
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【简答题】已知椭圆的方程为 (1)写出椭圆的顶点坐标,焦点坐标及离心率 (2)过椭圆的右焦点作与x轴垂直的直线,交椭圆与 、 ,求线段 的长 (3)求以椭圆短轴的两个顶点为焦点,一条渐近线为y=x的双曲线的标准方程
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A.
正确
B.
错误
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A.
增量式
B.
绝对式
C.
混合式
D.
反射式
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A.
(0, 3 2 ]
B.
[ 3 2 ,1)
C.
(0, 5 -1 2 ]
D.
[ 5 -1 2 ,1)
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