排序是计算机程序设计中的一种重要操作，常见的排序方法有插入排序、______和选择排

如图所示，传送带以恒定速度υ=3m/s向右运动，AB长L=3.8m，质量为m=5kg的物体，无初速地放到左端A处，同时用水平恒力F=25N向右拉物体，如物体与传送带间的动摩擦因数μ=0.25，求：物体从A到B所需时间．（重力加速度g=10m/s²）

女，45岁，劳累性呼吸困难、心悸1年余。体检：心尖区S₁亢进及二尖瓣开放拍击声，并有舒张中晚期隆隆样递增型杂音，P₂亢进，超声心动图显示二尖瓣呈城墙样改变，前后叶同向运动，开放受限，瓣口面积为0.8cm²。

其狭窄程度应为（）

A.正常

B.轻度

C.中度

D.重度

E.极重度

Kleptomania is an illness of the mind that gives a person the desire to steal. Such a person is not really a thief. They are sick and cannot help themselves. All small children act naturally and as they grow up they normally learn to control their actions. People with Kleptomania for certain medical reasons have failed to develop control over their desire to take things that do not belong to them. With medical help they may become normal citizens again. The things that a Kleptomaniac steals are seldom of great value. They often give away what they have stolen or collect things without using them.

小题1:What is the topic of the text?

A．Young thieves.

B．An unusual illness

C．Reasons for stealing

D．A normal child's actions小题2:From the text we learn that small children _______.

A．have little control over themselves

B．usually steal things but grow up honest

C．are usually Kleptomaniacs

D．like to give things away小题3:Which of the following word can best replace the word "desire" in the first sentence?

A．chance

B．power

C．right

D．wish小题4:Kleptomaniacs usually steal things that

A．are valuable

B．are unimportant

C．their friends like

D．they themselves need

面向全体学生，关注个别学生是学校心理辅导的一个基本原则。

溶剂型涂料涂饰工程应（）。

A.涂饰均匀

B.粘结牢固

C.漏涂、透底、起皮和反锈

D.裂缝

E.粗糙