【优化指导】(课标全国)高考英语总复习课时作业30北师大版.doc.pdf
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1、【优化指导】(课标全国) 高考英语总复习课时作业30北师大版 课 时作业(三十) Unit 15 B 卷 一、阅读理解 A Does your laptop sometimes get so hot that it can almost be used to fry eggs ? New technology may help cool it, and give information technology a unique twist, says Jairo Sinova, a professor. Laptops are getting increasingly powerful, but
2、 as they get smaller they are heating up, and dealing with the excessive heat has become a headache, Sinova explains? “The heart of the problem is the way information is processed, ” Sinova notes. “Laptops and some other devices use flows of electricity to process information, and thereby also produ
3、ce heat. Theoretically, excessive heat could melt the laptop, and also wastes considerable energy. ” Sinova,s research is on an alternate way to process information. “Our research looks at the spin(旋转)of eloctrons(电子),tiny particles that naked eyes cannot detect, ” he explains. “The directions they
4、turn can be used to record and process information. ” To process information, Sinova says, it is necessary to create information, transmit the information, and finally read it. The question is, can we change the way thi s i s done? “The device we ve designed arranges the el ectrons according to spin
5、 together with the infooiation we want to process. We then transmit the electrons to another place in the device but with the spin still surviving, and finally are able to me.asure the direction of their spin throug h a voltage (电 压)that they produce, ” Sinova explains. The biggest challenge to crea
6、te a s pin based device was the distance the electrons could travel while still keeping their spin?“Transmission is no problem now. Whereas before the limit was several hundred feet, with our device information can easily be transmitted hundreds of miles, ” he says. “This new device, as the only spi
7、n based device for infonnation processing, has a lot of real practical pote nt ial, ” he says. “One huge adva nt age is that i t is operational at room temperature, which nobody had been able to achieve until now. It may lead to a new and more efficient way to process information. n 1. To deal with
8、hot laptops, we need to _ ? A. make them smaller B? protect them with special materials C? find a new way to process information D? speed up the movement of electrons 2. What can we 1 earn about Sinos device? A. Tt makes information easily transmi tted to hundreds of mi 1es away. B. It can be operat
9、ed at any temperature. C. It can send information anywhere. D. It is made of all new materials? 3. From the last paragraph we can infer that _ ? A. laptops can only be used at room temperature B. the new device has not yet been put to practical use C. 1aptops are the most efficient way to process in
10、formation D. 1aptops function best indoors 4. What might be the most suitable title for the text? A. New Laptops Can Be Used to Fry Eggs B. New Laptops Waste No Enorgy C- New Technology May Cool the Laptop D. New Device Processes Information Faster B Kataria is the founder of the worldwide laughter
11、movcment. The celebration of World Laughter Day is a positive activity for wor1d peace and is intended to build up a global sense of brotherhood and friendship through 1aughter.The first uWorld Laughter Day“ gathering took pl ace i n Mumbai, India, on 11th January, 1998.12, 000 members from India an
12、d international Laughter Clubs attended it .Now there are over 5, 000 Laughter Clubs worldwide on al 1 5 continents. “HAPPY DEMIC ” was the first World Laughter Day gathering outside India.It took place on 9th January, two years after the Mumbai gathering. In Copenhagen, Denmark, more than 10, 000 p
13、eople gathered at Town Hall Square. The event went into Guinness Book of World Records. “World Laughter Day“ is now organized on the first Sunday of May every year. Hundreds of people gather worldwide on that day to laugh together. Today, many people fear widespread in ternational terrorism .The wor
14、ld has never faced so much unrest before. People are at war within themselves?Laughter is a universal Ianguage , which has the ability to unite humanity without reli gi on .Laughter can bui Id a comm on connecti on betwee n various rel i gions and create a new worl d order. The i dea may sound over
15、ambi ti ous (野心太大fl勺),and maybe i t i s. But maybe it is not. It is our deep belief that laughter and only laughter can unite the world, building up a global sense of brotherhood and friendship. Studies also say that laughter helps your body do the following: lower blood pressure; 1 ighten depressio
16、n; reduce stress; work out the heart, especial ly for those who are unable to perform physical exercise? So in 1 ife, when you can laugh, you should laugh loudly and with your entire bodybecause it/ s good for you. 5. The purpose of cel ebrating World Laughter Day is _ . A. to build up a global sens
17、e of brotherhood and friendship through laughter B. to build a common connection between various religions C. to reduce stress and lighten depression D. to lower blood pressure 6? The first World Laughter Day gathering outside India took place _ . A. on 11th January, 1998 B. on the first Sunday of M
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