搜题请搜索小程序“爱下问搜题”
问题 解答题
已知点A（-1，6）和B（3，0），在直线AB上求一点P，使|
AP
|=
1
3
|
AB
|．
答案

设P的坐标为（x，y），

若

AP
=
1
3
AB
，则由（x+1，y-6）=
1
3
（4，-6），

得

x+1=
4
3
y-6=-2.
解得
x=
1
3
y=4.

此时P点坐标为（

1
3
，4）．

若

AP
=-
1
3
AB
，则由（x+1，y-6）=-
1
3
（4，-6）

得

x+1=-
4
3
y-6=2.
解得
x=-
7
3
y=8.

∴P（-

7
3
，8）．

综上所述，P（

1
3
，4）或（-
7
3
，8）．

阅读理解
完形填空 （共12分，每小题1分）
阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。
Once a young man was traveling by train. It was a long and boring journey. As the train was moving through a wilderness(荒野), the passengers looked out of the windows 1  . When the train reached a bend(弯道)，it slowed down and then a simple house 2  . It was so easy to notice that everybody on the train turned to “enjoy” with eyes wide open. Some passengers even began a discussion about it. The young man was also 3  by the scenery. On his return he 4  the train at the nearest station and found his way to the house. Its owner said that he was troubled by the 5  of the train. He wanted to sell the house, but 6   would buy it.
7   the young man spent 30,000 dollars on the house. He thought it was a good place for 8   because it was facing the railway bend. When the train moved slowly past, the tired passengers would 9   the house.
He tried to 10  some big companies and told them that could be used for advertisement. At last the Coca-Cola Company took it to put up their 11  . To everyone’s surprise, the young man was afforded 180,000 dollars for a three-year rent.
This is a true story. It tells us that discovery is very 12 . Many people have got new ideas from it.
小题1:
A．excitedly B．quietlyC．safelyD．clearly
小题2:
A．appearedB．foundC．inventedD．came
小题3:
A．attackedB．attractedC．stickedD．moved
小题4:
A．got onB．turned on C．got offD．turned off
小题5:
A．track B．passengers C．conductorsD．noise
小题6:
A．nobody B．someoneC．advertiser D．everybody
小题7:
A．Gently B．QuicklyC．FinallyD．Lately
小题8:
A．discoveryB．rentingC．stayingD．advertisement
小题9:
A．apply forB．lack of
C．be interested inD．stay in
小题10:
A．work forB．join inC．connect withD．look up
小题11:
A．messagesB．magazinesC．noticesD．slogans
小题12:
A．interestingB．importantC．difficultD．different
查看答案
多项选择题

2007年10月，甲房地产开发公司(以下简称甲公司)委托乙建筑公司(以下简称乙公司)承建其开发的小区。2008年4月，甲公司领取了商品房预售许可证，开始预售房屋。5月，甲公司与郑某签订了商品房预售合同。6月，甲公司申请变更小区规划、设计并获得批准。按照新的方案，郑某所购房屋的空间尺寸和朝向发生了变化。2009年1月该小区交付使用，甲公司选聘的物业服务企业开始实施物业管理。2月郑某将自己所购房屋出租给刘某，租期为2年。刘某在屋顶安装了一个广告牌，宣传自己所开公司的产品。4月郑某将出租房屋抵押给银行，贷款50万元，贷款期为1年，并办理了抵押登记手续。

乙公司应当( )。

A．在开工前申领施工许可证

B．在开工前申领开工报告

C．取得建筑企业资质证书

D．对该工程施工质量负责
查看答案