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（新华社长江前线22日22时电） 人民解放军百万大军，从1千余华里的战线上，冲破敌阵，横渡长江。西起九江（不含），东至江阴，均是人民解放军的渡江区域。①二十日夜起，长江北岸人民解放军中路军首先突破安庆、芜湖线，渡至繁昌、铜陵、青阳、获港、鲁港地区，二十四小时内即已渡过三十万人。②二十一日下午五时起，我西路军开始渡江，地点在九江、安庆段。③至发电时止，该路三十五万人民解放军已渡过三分之二，余部二十三日可渡完。④这一路现已占领贵池、殷家汇、东流、至德、彭泽之线的广大南岸阵地，正向南扩展中。⑤和中路军所通敌情一样，我西路军当面之敌亦纷纷溃退，毫无斗志，我军所遇之抵抗，甚为微弱。⑥此种情况，一方面由于人民解放军英勇善战，锐不可当；另一方面，这和国民党反动派拒绝签订和平协定，有很大关系。⑦国民党的广大官兵一致希望和平，不想再打了，听见南京拒绝和平，都很泄气。⑧战犯汤恩伯二十一日到芜湖督战，不起丝毫作用。⑨汤恩伯认为南京江阴段防线是很巩固的，弱点只存在于南京九江一线。⑩不料正是汤恩伯到芜湖的那一天，东面防线又被我军突破了。（11）我东路三十五万大军与西路同日同时发起渡江作战。（12）所有预定计划，都已实现。（13）至发电时止，我东路各军已大部渡过南岸，余部二十三日可以渡完。（14）此处敌军抵抗较为顽强．然在二十一日下午至二十二日下午的整天激战中，我已歼灭及击溃一切抵抗之敌，占领扬中、镇江、江阴诸县的广大地区，并控制江阴要塞，封锁长江。（15）我军前锋，业已切断镇江无锡段铁路线。

如图，一光滑的轻滑轮用细绳OO'悬挂于O点，另一细绳跨过滑轮，其一端悬挂物块B，另一端系一位于水平粗糙桌面上的物块A，整个系统处于静止状态．现在对A施加斜向左上方的外力F，且F由零逐渐增大，直到A即将滑动，在此过程中，下列说法中正确的是（   ）

       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.