设F1、F2分别为椭圆C:x2a2+y2b2=1(a>b>0)的左、右焦点.(Ⅰ

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问题:

设F1、F2分别为椭圆C:
x2
a2
+
y2
b2
=1(a>b>0)的左、右焦点.
(Ⅰ)若椭圆上的点A(1,
3
2
)到点F1、F2的距离之和等于4,求椭圆C的方程;
(Ⅱ)设点P是(Ⅰ)中所得椭圆C上的动点,求线段F1P的中点M的轨迹方程.
考点:圆锥曲线综合
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分解因式:

(1)2a2-18    

(2)-3x3+6x2y-3xy2

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阅读理解

     More and more people are annoyed at the continually rising house prices.They want to know

who is to blame for it.Local governments, developers and speculators (投机商) share a vested (既

得的) interest in it.People who are really in need of homes are most likely to suffer heavy losses.

     Many local governments depend on selling land to keep its normal operation.The higher land

prices, the more money.Therefore, developers back the local governments by buying land at high

prices.In return, the governments make favorable policies to help the developers.For example, drive

all the possible home buyers to this nasty (危险的) market.They even encourage large numbers of

speculators to catch more people.

     Rising house prices have already become the fence which divides the Chinese society.It has

caused widespread dissatisfaction.The government will lose the support of the common people if

leaving house prices out of control.Besides, rising house prices will stop us building the new

countryside as the present policy actually forbid people to flow freely from cities to the countryside.

     Collecting taxes on houses can fundamentally solve this problem.On one hand, it will discourage

the speculators.On the other hand, it will offer a stable tax resource apart from reducing the sales

cost of the developers.Secondly, stop the developers selling the houses before completion.If so, the

developers will certainly try their best to sell all their houses once completed.And this will also lower

speculators' expectation of price rising, which will decrease speculations.

1. The only victims of rising house prices are________.

A. governments  

B. real home buyers

C. developers  

D. speculators

2. The local governments reward the developers by________.

A. offering enough land  

B. allowing sales in advance

C. providing enough buyers  

D. making favorable policies

3. We can infer from the passage that continually rising house prices will________.

A. benefit the government

B. draw more home buyers

C. help the housing industry develop soundly

D. affect the sound development of the Chinese society

4. Collecting taxes on houses has all the following effects except________.

A. making the developers do their best to sell their houses

B. cutting down speculations

C. supplying a stable tax resource for the government

D. decreasing the sales cost

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* * 下裂手术治疗的年龄以下列哪项为宜

A.1~6岁

B.7~10岁

C.10~15岁

D.成年以后

E.任何年龄都一样

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薪酬水平调整的类型有哪些?

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行为人出于过失而使用伪造、变造的有价证券,但不知是伪造、变造有价证券而使用的,不构成有价证券诈骗罪,而以贪污罪论处。

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