“I sometimes get up at three or four in the morning and I surf the net．”
   “I often check my e-mail forty times a day．”
   “1 often spend more than three hours during one time on the net．"
   “I spend more time in chat rooms(聊天室)than with my‘real—life’friends．”
   Do you know who like these? They are part of a new addiction(瘾)called Internet addiction. Internet addicts spend at least thirty to forty hours online every week．The use of the Internet can be an addiction like drug(毒品)use．People lose control(控制)of the time they spend on the Internet．
   For example, one college student was missing for several days．His friends were worried．and they called the po1ice．The police found the student in the computer lab：he was surfing the net for several days straight．
   Studies show that about 6％to 10％of Internet users become addicted．And people worry about the teens because the Internet is changing the playing field for some of them．They spend more time in cyber—space than in the real world of friends and family．
   Is“surfing the net”a hobby or an addiction for you? You may have a problem if you have these symptoms(症状)
●You do not go to important family activities or you do not do school work because you like to spend hours on the Internet．
●You can’t wait for your next online time．
●You plan to spend a short time online，but then you spend several hours．
●You go out with your friends less and less．

某物体沿一直线运动，共v﹣t图象如图所示，则下列说法中正确的是（   ）

诉衷情

当年万里觅封侯，匹马戍梁州。关河梦断何处？尘暗旧貂裘。

胡未灭，鬓先秋，泪空流。此生谁料，心在天山，身老沧洲。

破阵子·为陈同甫赋壮词以寄

醉里挑灯看剑，梦回吹角连营。八百里分麾下炙，五十弦翻塞外声。沙场秋点兵。

马作的卢飞快，弓如霹雳弦惊。了却君王天下事，赢得生前身后名。可怜白发生！