当移动平均线从上升转为水平且向下运动，价位从移动平均线一上方向下突破，回升时若无力穿透移动平均线，是最佳买入时机。()

style=text-align: justify; style=text-align: justify; style=text-align: justify; style=text-align: justify; style=text-align: justify; style=text-align: justify;

    As high school students flock to social networking sites, campus police are scanningtheir Facebook and MySpace pages for tips to help break up fights, monitor gangs andprevent crime．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Some students object to police looking over their shoulders． But officers responsiblefor school safety say routine checks of the online forums often add to the knowledge theyobtain from hallways or schoolyards．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    In recent years, school administrators have blamed some campus fights on Internetconflicts and urged parents to keep watch on their children's computer activity． But studentswho use the Web to let their 500 closest friends know what they are doing at all times aresometimes surprised that police are watching, too．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Police don't have special privileges on Facebook or MySpace． Students who want to gounobserved can change privacy settings so that their profiles are displayed only to a list ofapproved people． But the default (默认) settings leave those profiles open to many Internetusers (in the case of Facebook) or all of them (in the case of MySpace)．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Employers and college admissions counselors have examined online profiles of studentapplicants for some time． Police across the country have been doing the same for the pasttwo or three years, said Kevin Quinn, a spokesman for the Minnesota-based National
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/Association of School Resource Officers．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    "If you're already familiar with the technology, it doesn't take you but a couple ofminutes to hook into the student population and keep an eye on things," Quinn said．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    An expedition into a thicket (丛林) of MySpace profiles found high school studentsdiscussing drugs, sex and fights． It was all publicly available (although in language thatcaused a reporter to blush)．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Late last month, Fairfax County police announced the arrests of seven Chantilly areateenagers for trying to recruit Franklin Middle School students to a gang． That investigationwas aided when a student showed the school resource officer gang symbols littering one ofthe suspect's Myspace profiles．
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Fairfax police say they pride themselves on addressing issues in schools before theydevelop into major problems． Keeping an eye on Facebook and MySpace has become anextra tool in that effort, they said．

组织分析包括组织外部环境和内部机制分析，下列叙述中不属于组织内部机制分析的是（ ）。

    Most of us are neither pilots nor astronauts. We are not trained to steer large hulks of steel and gasoline while manipulating small computers. So there’s something blindingly obvious about the risks of texting while driving. Yet research is beginning to show that driving while simply talking on a cell phone—including using hands-free technology--can prove dangerous，even deadly. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    In late July，the Center for Auto Safety released hundreds of pages of a study that identified the cell phone as a serious safety hazard when used on the road. And though it’s impossible to accurately calculate how many car accidents nationwide are cell phone related, David Strayer, a psychology professor at the University of Utah，estimates that only 2％of people are able to safely multitask while driving. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Strayer, who for more than a decade has been studying the effects driving and cell-phone use have on the brain，says those 296 are probably the same people who would be really good fighter pilots. Rarities. Some of Strayer's other findings show that most drivers tend to stare straight ahead while using a cell phone and are less influenced by peripheral vision（周边视觉）. In other words，“cell phones，”he says，“make you blind to your own bad driving. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    And even though the common assumption is that hands—free technology has reduced the more dangerous side effects of cell-phone use，a series of tests conducted by Strayer seems to indicate the opposite. A passenger acted as another set of eyes for the driver in the test and even stopped or started talking depending on the difficulty of conditions outside the car. Meanwhile，half the drivers talking on a hands-free phone failed bypassing（绕过）the rest area the test had called for them to stop at. 
style=color: rgb(51, 51, 51); font-family: "Microsoft YaHei"; white-space: normal; background-color: rgb(250, 250, 250);/    Part of the problem may be that when people direct their attention to sound，the visual capacity of their brain decreases，says Steven Yantis，a professor of psychological and brain sciences at Johns Hopkins University. It can be as if a driver is seeing the image in her head of the person she is talking to，there by decreasing her ability to see what’s actually in front of her. 

style=text-align: justify; style=text-align: justify; style=text-align: justify;