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Though “nanometer”(纳米) is now a fashionable term all over the world, few people know
exactly what it is. It has become a new favorite of manufacturers and sellers in recent years.Many “high-tech” products bearing the name “nano” have entered the market,bringing more mysterious feeling to surprised consumers.
Nanometer is a very small length unit of measure,and is very small.One millimeter is 1000 micrometers,and one micrometer is 1000 nanometers.That is,one nanometer is one billionth of a meter.Nano materials are solid materials composed of particles(粒子)or crystallites(晶体) of less than 100 nanometer in size.Then,is a cup made of nano material really any different from an ordinary cup in function as far as how it works?
Are nano cups really so wonderful?A reporter went to the Institute of Nanomedicine,which is the first such institute of such a sort in the world and the only one in China,specializing in researching the investigation  of the application of nano technology into medicine.
A water molecule(分子) is composed of 2 hydrogen atoms and 1 oxygen atom.It can be changed only by special manipulation of the atoms. The material constituting the cup can have ananometer particles . But it cannot change the chemical and physical properties of the water contained in it.The water in the cup is still water. When people drink it,it will produce no special effect on human body.
Professor Ji who worked in the Instiute of Nanomedicine told the reporter, so far, the investigation of nano materials is still limited in the laboratory. No commercial micro products can be produced yet. With the present level of science and technology, the time of everyday goods made of nanometer materials is still years away.
The products labeled with nano marks in the market now are only traditional products coated with a thin layer of nanometer material, which makes them more abrasion resistant(耐磨), much easier to be cleaned, or oil resisting or moth proof(防蛀).
Professor Ji explained that nano cup is a real up. It can also be included in the list of nano products in a certain sense. But the nano up has not changed its property and function as a cup. It is not a magical medicine for curing and health care.
72.Which of the following shows the right relationship?
A.nanometer<millimeter<micrometer<meter
B.micrometer<millimeter<nanometer<meter
C.nanometer<micrometer<millimeter<meter
D.millimeter<micrometer<nanometer<meter
73.It can be inferred from the passage that       .
A.nano materials have been put into use in daily goods
B.real nano products haven’t become available for people
C.the nano cup is very effective in curing and health care
D.real nano products are being produced by some companies
74.The underlined word “properties” in the fourth paragraph probably means        .
A.possessions      B.qualities    C.reactions   D.symbols
75.What would be the best title for the passage?
A.High-tech Products  B.Nano Cups
C.Nano Materials        D.High-teach Research

小题1:C
小题2:B
小题3:B
小题4:C
         
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科目:高中英语 来源:不详 题型:完形填空

阅读下面短文,掌握其大意.然后从1—15各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
A land free from destruction(毁灭,破坏), plus wealth, natural resources, and labor supply ——  all these were important 1      in helping England to become the center for the Industrial Revolution. 2       they were not enough. Something else was needed to start the industrial process. That "something special" was men —— 3      individuals who could invent machines, find new 4      of power, and establish business organizations to reshape society. The men who created the machines of the Industrial Revolution 5     from many backgrounds and many occupations. Many of them were 6       inventors than scientists. A man who is a pure scientist is primarily interested in doing his research 7       .He is not necessarily working 8      that his findings can be used. An inventor or one interested in applied science is all trying to make something that has a concrete use. He may try to solve a problem by 9       the theories 10       science or by experimenting through trial and error. Regardless of his method, he is working to obtain a  11      result: the construction of a harvesting machine, the burning of a light bulb(灯泡), or one of 12      other objectives. Most of the people who 13       the machines of the Industrial Revolution were inventors, not trained scientists. A few were both scientists and inventors. Even those who had little or no training in science might not have made their inventions 14      a groundwork had not been laid by scientists years 15     .
小题1:
A.cases B.reasons C.factors D.situations
小题2:
A.But B.And C.Besides D.Even
小题3:
A.generating B.effective C.motivating D.creative
小题4:
A.origins B.sources C.bases D.discoveries
小题5:
A.came B.arrived C.stemmed D.appeared
小题6:
A.less B.better C.more D.worse
小题7:
A.happily B.occasionally C.reluctantly D.accurately
小题8:
A.now B.and C.all D.so
小题9:
A.planning B.using C.idea D.means
小题10:
A.of B.with C.to D.as
小题11:
A.single B.sole C.specialized D.specific
小题12:
A.few B.those C.many D.all
小题13:
A.proposed B.developed C.supplied D.offered
小题14:
A.as B.if C.because D.while
小题15:
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科目:高中英语 来源:不详 题型:阅读理解

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科目:高中英语 来源:不详 题型:阅读理解


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科目:高中英语 来源:不详 题型:阅读理解


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A.memorizing telephone numbers
B.improving working memory
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科目:高中英语 来源:不详 题型:阅读理解


第三部分:阅读理解(共20小题;每小题2分,满分40分)
阅读下列短文,从每题所给的四个选项A、B、C和D中,选出最佳选项,并在答题卡上将该项涂黑。
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C.In the late morning.      D.At midnight.
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