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【单选题】
Very soon a computer will be able to teach you English. It will also be able to translate any language for you too. It's just one more incredible result of the development of microprocessors--those tiny parts of a computer commonly known as 'silicon chips'. So give up going to classes, stop buying more textbooks and relax. In a couple of years you won't need the international language of English. Already Texas instruments in the United States is developing an electronic translation machine. Imagine a Spanish secretary, for example, who wants to type a letter from the boss to a business man in Sweden. All he or she will have to do is this first type the letter in Spanish. The letter will appear on a television screen. After a few seconds the translated letter will appear on another television screen in Stockholm in perfect Swedish. And that's not all. Soon a computer will be able to teach you English, if you really want to learn the language. You'll sit in front of a television screen and practise endless structures. The computer will tell you when you are correct and when you are wrong. It will even talk to you because the silicon chips can change electrical impulses into sounds. And clever programmers can predict the responses you, the learner, are likely to make. So think of it. You will be able to teach yourself at your own pace. You will waste very little time, and you can work at home. And if after all that, you still can't speak English you can always use the translating machine. In a few years, therefore, perhaps there will be no need for BBC Modern English, or BBC English by Radio programs--no more textbooks or teachers of English. Instead of buying an exciting new textbook, the computer will ask you to replace it with microprocessor one thousand nine hundred and eighty-four. Fast, reliable and efficient language learning and translating facilities will be available to you. Think of that no more tears or embarrassing moments. One little problem is that a computer can't laugh yet-- but the scientists are working on it. Happy learning! Silicon chips are ______.
A.
microprocessors
B.
the result of the development of microprocessors
C.
the computer itself
D.
parts of microprocessors
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【单选题】国际货币基金组织(IMF)在()年把人民币纳入特别提款权(SDR)。
A.
2010
B.
2012
C.
2014
D.
2015
【简答题】_____与_____组成了实现方式图,可以帮助设计系统的整体物理架构。
【单选题】下图表示毒品可卡因对人脑部神经冲动的传递干扰,下列有关说法正确的是()
A.
多巴胺是一种神经递质,结构①将多巴胺释放到突触间隙的方式称为主动转运
B.
多巴胺能与结构②特异性结合并进入下一个神经元
C.
可卡因可导致突触间隙中多巴胺含量增加,增强并延长对脑的刺激,产生“快感”
D.
“瘾君子”未吸食毒品时,精神萎蘼,四肢无力,是由于体内生长激素的含量减少
【判断题】置换同构俗称“偷梁换柱”,意指将组成某物质的某一特定元素与另一种本不属于其物质的元素进行非现实的构造,传达出新的意义与表现形式。置换图形构成方法虽然使物体间的结构关系不变,但经过异常组合后的置换图形在新的形态结构中,却因异物组合方法导致了逻辑上的“张冠李戴”。
A.
正确
B.
错误
【简答题】钠与水反应的离子方程式是______.在探究金属钠与水反应(如图)的实验过程中,某课外小组同学记录了如下实验现象和实验结论: ①有碱生成    ②溶液变红   ③钠四处游动   ④钠浮在水面上  ⑤有气体产生  ⑥钠的密度比水小  ⑦钠熔成光亮的小球  ⑧反应放热,钠熔点低 请填写下表中的空格(从①~⑧中选择,填序号): 实验现象 ⑦ ______ ③ ______ 实验结论 ______ ⑥ _...
【判断题】在一个推动型供应链中,生产和分销的决策都是根据短期预测的结果做出的。
A.
正确
B.
错误
【简答题】下图是我们研究常见物质组成、性质的几个实验: ①实验1:写出该反应的化学方程式 。 ②实验2:该实验证明水是由 组成的化合物。 ③CO 2 与NaOH溶液反应无明显现象,为证明其反应,设计实验3。可观察到的实验现象是塑料瓶变瘪了,其原理是利用 。有同学却对此提出质疑,他认为上述实验不严谨,其理由是 ,要得到科学严谨的结论,仍利用该装置,补做的对比实验是将氢氧化钠溶液换成 ,与加入氢氧化钠溶液的实验...
【单选题】关于脑干的内部结构,说法正确的是
A.
灰质在外,白质在内
B.
中央的腔隙为第四脑室
C.
锥体束由下行纤维构成
D.
薄束核、楔束核为脑神经核
E.
锥体交叉在内侧丘系交叉平面之上
【简答题】为实现增益(dB)与控制电压成线性关系,图画出了其实现方案和简化原理电路,其中v in 是输入信号,V C 是控制电压,Q 1 、Q 2 、Q 3 、Q 4 、Q 5 、Q 6 组成可变增益放大器,Q 7 、Q 8 、M 4 、M 5 组成预失真网络,M 1 、M 2 、M 3 、Q 9 、Q 10 实现电压电流变换。试推导放大器增益A与其控制电压V C 的关系式。
【单选题】关于脑干的内部结构,说法正确的是
A.
灰质在外,白质在内
B.
中央的腔隙为第四脑室
C.
锥体由上行纤维构成
D.
薄束核、楔束核为脑神经核团
E.
锥体交叉在内侧丘系交叉平面之下
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