原鸡进化成了不同品种的鸡是（ ）

       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.

生物体能够由小长大的主要原因是（  ）

入世以来，中国进出口贸易总额增长迅速，排名跃居世界第1位。世界500强企业中480多家在华投资。目前在外企就业人员超过2500万人，员工收入逐年增加。材料表明 （    ）
①坚持对外开放，老百姓得到实惠多多
②我国的经济发展主要依赖于对外贸易的增长
③实行对外开放要“引进来”与“走出去”相结合
④对外开放是我国现代化建设必不可上的条件 

日本工业集中在太平洋沿岸和濑户内海沿岸的主要原因（   ）.