【襄阳汉江传媒网消息】记者获悉，19岁的襄阳姑娘张丽婷已经入选中国女子篮球国家队备战伦敦奥运会的16人大名单，并于昨日抵达美国，准备即将开始的热身赛。

       张丽婷的父亲张庆林告诉记者，目前张丽婷的状态很好，她的实力也得到了教练的认可。原计划张丽婷要随国奥队来我市参加“奥星粮油杯”国际青年女篮四国挑战赛，但因备战奥运，此行只能作罢。张庆林说，张丽婷对此次不能回家乡比赛感到十分遗憾，她表示将努力训练，争取代表国家队参加伦敦奥运，在世界赛场上为襄阳增光添彩。

 下列有关生活常识的说法中，错误的是（　　）

       I just hope that our brains won’t crash(死机). Are you wo rking on your typing skills to make you a more efficient worker? That may be all for nothing as Intel believes that we’ll be able to control our computers with our brains by 2020.

       Intel and its resear ch partners are study ing how brain acts when it thinks. For example, scientists have found that people’s brains react in a similar manner when asked to think of a bear.

       Through sensors(感应器)that can find this sort of brain activity, Intel thinks that it will be able to read and translate this into an input system thanks to a c hip in the brain.

        “We’re trying to prove you can do interesting things with brain wav es. ”Intel research scientist Dean Pomerleau told Computerworld. “Eventually people may be willing to be, more devoted to brain implants(植入物). Imagine being able to surf the Web with the Power of your thoughts. ”

       Even if thin king about a bear isn’t enough to show that you want to copy and paste something. Intel still thinks that there’s a future in using your brain instead of the keyboard.

        “If we can get to the point where you can accurately find specific words, you could mentally type, ”he added. “You could compose characters or words by thinking about letters flashing on the screen or typing whole words rather than their individual characters. ”

       While this may all sound impractical for present time, Intel thinks that it’s possible and something we’ll all want.

        “I think human beings are unusually adaptive(适应的), ”said Andrew Chien, vice pre sident of research and director of future technologies research at Intel Labs. “If you told people 20 years ago that they would be carrying computers all the time, they would have said, ‘I don’t want that. I don’t need that. ’Now you can’t get them to stop carrying device s. There are a lot of things that have to be done first but I think implanting chips into human brains is well within the scope of possibility. ”

       Make good use of your favorite mouse and keyboard set-up before they’re old-fashioned.

如图甲所示，两个带正电的小球A、B套在一个倾斜的光滑直杆上，两球均可视为点电荷，其中A球固定，带电量Q_A=2×10^﹣4C，B球的质量为m=0.1kg．以A为坐标原点，沿杆向上建立直线坐标系，B球的总势能随位置x的变化规律如图乙中曲线Ⅰ所示，直线Ⅱ为曲线I的渐近线．图中M点离A点距离为6米．（g取10m/s²，静电力恒量k=9.0×10⁹N•m²/C²．）