题目列表(包括答案和解析)
Though “nanometer” 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 or crystallites 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.
Ji(director Institute of Nanomedicine):
A water molecule is composed of 2 hydrogen atoms and 1 oxygen atom.It can be alterchanged only by special manipulation of the atoms.The material constituting the cup can have a nanometer particles size of the nano level.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.
Prof.Ji told the reporter,so far,the investigation of nano materials is still confined in the laboratory.No commercial micro products can be produced yet.With the present level of science and technology,the time of everyday goods age of daily use articles made of nanometer materials is still years away.
The commodities 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,much easier to be cleaned,or oil repelling or moth proof.
Prof.Ji explained that nano cup is a real cup.It can also be included in the list of nano products in a certain sense.But the nano cup has not changed its property and function as a cup.It is not a magical medicine for curing and health care.
Which of the following shows the right relationship?
A.nanometer<millimeter<micrometer<meter
B.nanometer<micrometer<millimeter<meter
C.micrometer<millimeter<nanometer<meter
D.millimeter<micrometer<nanometer<meter
The underlined part in the last second paragraph but one is about_________.
A.the strong points of nano cups B.the shortcomings of nano cups
C.the uses of nano cups D.the wonders of nano cups
Which of the following does not show that nano cups are different from ordinary cups?
A.Nano cups can’t make people healthier.
B.Nano cups are made of a different material.
C.Nano cups are much easier to be cleaned.
D.Nano cups are hard to produce.
According to the text,nano cups in the market are_________.
A.only traditional products
B.ordinary cups covered with a little nanometer material on the surface
C.cups made of a nano material
D.cups made of a mixed material
A little boy asked his mother, “Why are you crying?” “Because I’m a woman,” she told him.
“I don’t understand,” he said. His mum just hugged him and said, “You 36 will.”
Later the little boy asked his father, “Why does my mother seem to cry for no reason?” “All women cry for no reason,” 37 so much could his dad say.
The little boy grew up and became a man, still 38 why women cry. 39 he gave a call to God, and when God got on the phone, he asked, “God, why do women cry so 40 ?”
God said, “When I made the woman she had to be 41 . I made her shoulders 42 enough to carry the weight of the world; yet, gentle enough to give 43 .”
“I made her 44 childbirth and the rejection that many times comes from her children. I gave her hardness that allows her to keep going when everyone else 45 , and to take care of her family in spite of sickness and fatigue (劳累) without 46 . I gave her the sensitivity to 47 her children under any and all circumstances, 48 her child has hurt her very badly. I gave her wisdom to carry her husband through his 49 . I gave her wisdom to know that a good husband never 50 his wife, but sometimes tests her strengths and her resolve to stand beside him 51 . And finally, I gave her a tear to shed. She can use it whenever it is needed.”
“You see, the beauty of a woman is not in the 52 she wears, the figure that she carries, or the way she 53 her hair. The 54 of a woman must be seen in her eyes, because that is the doorway to her heart and the place where love 55 .”
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A Leap(跳跃)to Honor
Leaping on a narrow balance beam(平衡木) is not easy. But Lola Walter, a 13-year-old gymnast, is an expert at it.
To perfect her skills, Lola 36 for four hours a day, five days a week. At the state championships in March, she finished seventh out of 16 girls.
That’s especially impressive, 37 she is legally blind, born with a rare condition that causes her eyes to shift constantly. She often sees double and can’t _38 how far away things are.
When she was little, her mom 39 that even though she couldn’t see 40 , she was fearless. So her mom signed her up for gymnastics when she was three. She loved the 41 right away and gymnastics became her favorite.
Though learning gymnastics has been more 42 for her than for some of her tournaments, she has never quit. She doesn’t let her _43 stop her from doing anything that she wants to.
She likes the determination it takes to do the sport. Her biggest 44_ is the balance beam. Because she has double vision, she often sees two beams. She must use her sense of touch to help her during her routine. Sometimes she even closes her eyes. “You have to 45_ your mind that it’ll take you where you want to go,” says Lola.
To be a top-level gymnast, one must be brave. The beam is probably the most 46 for anyone because it’s four inches wide. At the state competition, Lola didn’t fall 47 the beam. In fact, she got an 8.1 out of 10---- her highest score yet.
Lola doesn’t want to be 48 differently from the other girls on her team. At the competitions, the judges don’t know about her vision _49 _. She doesn’t tell them, because she doesn’t think they need to know. Her mom is amazed by her _50 attitude.
Lola never thinks about 51__. She is presently at level 7 while the highest is level 10 in gymnastics. Her 52 is to reach level 9. She says she wants to be a gymnastics coach to pass down what she’s learned to other kids 53 she grew up.
Lola is 54 of all her hard work and success. She says it’s helped her overcome problems in her life outside gymnastics, too. Her 55 for others is “just believe yourself”.
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A car that runs on coffee is unveiled(shown to the public for the first time)today but at between 25 and 50 times the cost of running a car on petrol, the invention won’t please any motor industry accountants.
Nicknamed the Car-puccino, it has been created using a 1988 Volkswagen Scirocco bought for £400 and it was chosen because it looked like the time-traveling DeLorean in the movie Back To The Future.The car will be driven the 210 miles between Manchester and London powered only by roasted coffee granules (颗粒).It has been built by a team from the BBC1 science programme Bang Goes The Theory and will go on display at the Big Bang science fair in Manchester to show how fuels other than traditional petrol can power vehicles.
The team calculates the Car-puccino will do three miles per kilo of ground coffee (咖啡粉) — about 56 cups of espressos (浓咖啡) per mile.The journey will use about 70 kilos of ground coffee which, at supermarket prices of between £13 and £26 a kilo depending on brand and quality, will cost between £910 and £1,820, or between 25 and 50 times the £36 cost of petrol for the journey.In total, the trip will cost 11,760 espressos, and the team will have to take ‘coffee breaks’ roughly every 30 to 45 miles to pour in more granules.They will also have to stop about every 60 miles to clean out the ‘coffee filters’ to rid them of the soot and tar which is also generated by the process.So despite a top speed of 60mph, the many stops mean the going will be slow, with the journey taking around ten hours.
Sadly, the inventors will still have to pay duty on their coffee fuel---even though tax collectors at Her Majesty’s Revenue and Custom haven’t yet worked out how much.
Nick Watson, producer of Bang Goes The Theory, said, “Coffee, like wood or coal, has some carbon content so you can use it as a fuel.The coffee needs to be very dry and in granules to allow the air to move through the pile of coffee as it burns.The brand doesn’t matter.” He said the same technology could be used to power a car on other unusual fuels, such as woodchips or nut shells, construction or agricultural waste.
【小题1】Which is the right way to choose the coffee used as fuels to run the Car-puccino?
A.It should be very dry. | B.The stronger, the better. |
C.The smaller the granules are, the better. | D.It should be of a certain brand. |
A.All kinds of materials can be used as fuels. |
B.The Car-puccino will be put into the market soon. |
C.Nick Watson is the designer of the Car-puccino |
D.Much remains to be improved for the Car-puccino. |
A.it makes a lot of noise |
B.it runs at a very high cost |
C.it has to stop to be refueled very often |
D.it’s not good enough for long-distance journey |
A.About 70 kilos | B.About 42 kilos. | C.About 32 kilos | D.About 30 kilos |
A.It looks like wood or coal. | B.It contains some carbon content. |
C.It is very cheap. | D.It is much better than woodchips or nut shells. |
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
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