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

Dickson Despommier, a public health professor at Columbia University in New York City developed an idea with his students nine years ago. They imagined people in cities growing crops inside a tall building. Tomatoes could grow on one floor of the skyscraper(摩天大楼), potatoes on the next, small animals and fish on the floor above.
This vertical(垂直的) farm, or "farmscraper", could have space for restaurants and other places that serve food, like schools or hospitals. They could serve foods that are truly locally grown.
But why would anyone want to build a farm indoors in a city? Dickson Despommier believes it will become necessary. The world needs to find places to produce enough food to feed the growing population. Space, he says, is an all-important issue.
The professor also points to the problems of traditional farms. They use a lot of freshwater. Their fertilizer and animal waste can pollute water resources. And their growing seasons can be limited.
But inside the vertical farm, crops could grow all year. And there would be no wind to blow away soil. Farmers would not have to worry about too much or too little rain, or about hot summers, freezing winters or insects. And without insects there would be no need for chemicals to kill them.
Farm machines that .use fossil fuels, like tractors, would not be needed either. And water could be recycled for drinking. "The vertical farm reuses everything, so there is no waste," says Professor Despommier.
Even buildings could be saved. Old buildings could become new farms and provide jobs.
The professor has been actively proposing the idea to cities as far away as Dubai and Canada. But so far it exists only in plans and drawings, and a model at the Museum of Science and Industry in Chicago.
Critics say building a farmscraper would cost too much, especially considering the price of land in many cities. Dickson Despommier estimates the cost at about twenty to thirty million dollars.
But he says the building would not have to be very tall. And his graduate students have found many empty lots and unused buildings in New York City that could provide space.
【小题1】According to the passage the purpose of proposing the idea of a farm scraper is to      .

四. Complete each sentence with the correct form of the word in brackets

1. Asking me ___________ (compare) Shakespeare and Darwin makes no sense; it’s like___________  (compare) apples and oranges. They are totally different.

2. The disc, digitally _________ (record) in a studio,  sounded fantastic at the party that night.

3. Sarah, hurry up . I’m afraid you won’t have time to get _______ (change) before the party.

4. It shames me to say it ,but I told a lie when __________ (question) at the meeting by my boss.

5. ________________ (separate) from other continents for millions of years , Australia has many plants and animals not found in any other country in the world.

6. ______(lose) in the mountains for a week , the two students were finally saved by the local police.

7. _______________(cause) a lot of damage to this area, the storm finally moved out to sea.

8. ______ (put) into use in April2000,the hotline was meant for residents reporting water and heating supply breakdowns.

9. All the things ___________ (consider), his proposal is of greater value than yours.

10. He had his leg _________ (break) in the match yesterday.

Bicycles are a great way to get around. They are fun to ride, especially down hills. And, as you speed along the road, you might also think of ways in which you could improve your bike – make it safer, more efficient, or more comfortable. In fact, the two-wheeled machines make for some cool science projects.

This year’s Intel International Science and Engineering Fair (ISEF), held last May in Cleveland, had three bicycle projects from three countries. Like many of the other experiments presented at ISEF, the bike projects showed that some of the most interesting scientific research often begins by taking a closer look at things you care about.

Renato Angulo Chu had even grander ambitions. The 12th-grader from Lima, Peru, wanted to address some of his country’s economic troubles.

“I see a problem in my country,” Renato said, “If you go to the forests in Peru, in some places you can not find electricity. If you go with my bicycle, you can turn on the lights.”

Renato, 16, spent 3 years designing his special Multibike. The device looks like a fixed exercise bike. It has wires fixed along the frame and a blender fastened to the back. Turning the pedals operates the blender. The same principle can be used to sharpen knives or sweep city streets.

The Multibike can work either as a fixed bike or as a bicycle able to travel city streets and country road. It’s made from inexpensive materials, and the user gets exercise while pedaling to operate a machine.

“You pedal the bike, and you can mix any drink you want,” Renato said. More importantly, he added, the same concept could be used to bring light to houses in remote regions of the rainforest.

1. What can we learn from the first paragraph?

A. Bicycles are the best way to go about.

B. Bikes should be made more comfortable to ride

C. You can improve your bicycle for science research.

D. Many inventions are connected with the bicycle.

2. Which of the following is true according to the passage?

A. ISEF is an exhibition displaying bicycle experiments designed by students.

B. Looking closely at things you are concerned about can lead to scientific research

C. Renato’s improvement of the bicycle has solved the country’s great problem.

D. Renato’s special bicycle will soon be put into use in remote areas.

3. The underlined word “address” in the third paragraph probably has the same meaning as _______.

A. make address written                   B. give up    C. work at    D. speak at

4. Renato’s special Multibike has all the following functions except ______.

A. making knives sharp

B. mixing any kind of drinks

C. producing electricity

D. operating a machine with its own electricity

5. It can be inferred that Renato’s special bicycle is mainly designed for ______.

A. distant areas in the rainforest without electricity

B. the use of his own family to make life easier

C. the competition of ISEF to win money to support remote rainforests

D. enough exercise by pedaling it.

With the Tesla Roadster and other plug­in (插入式) electric vehicles hitting the road，demand is growing for accessible refueling points to recharge(充电) them. Carbon Day Automotive, a Chicago­based company，has now demonstrated（演示）a solar­powered recharging point, known as the Solar Plug­In Station，which lets motorists easily charge their cars using electricity that has been produced without any environmental damage.

The Solar Plug­In Station has gone on show in Chicago as part of the city’s bid（竞标）to host the 2016 Olympic Games. According to Carbon Day Automotive，the Solar Plug­In Station on show in Chicago is part of the vital infrastructure(基础设施) required for electric vehicles in Chicago and was the focus of a recent visit by the International Olympic Committee.

These solar­powered electricity points will be used daily to fuel the city’s electric vehicles with power from the sun. By producing the electricity from pollution­free solar cell, the CO2 emissions are reduced to zero.

“Solar energy and electric vehicles are a partnership that is one more step to reducing our dependence on foreign oil,” says Richard Lowenthal, CEO of Coulomb Technologies.Coulomb Technologies recently developed the components (部件) required for individual recharging stations，marketed as ChargePoint Networked Charging Stations.Carbon Day Automotive is the Midwest distributor for the ChargePoint stations. The Solar Plug­In Station consists of giant solar panels (电池板) that shade the tiny ChargePoint Networked Charging Station.The solar panel is connected to an underground battery pack，ready for everyday refueling.

“Without these stations it would be like driving around in a traditional car without the availability of gas stations，” says Scott Emalfarb，CEO at Carbon Day.“The day of true plug­in electric vehicles will be here sooner than most people realize and the world needs to be ready to accommodate（为……提供场地）them.”

1.The Solar Plug­In Station is used as part of the bid to host the Olympics mainly because ________.

A. it’s environmentally friendly                                 

B. it makes up for the lack of electricity

C. it’s a new idea and attracts people’s attention        

D. it brings convenience to electric vehicle users

2.We can learn from the passage that ________.

A. to recharge the electric vehicles takes a long time        

B. the Solar Plug­In Station will come into use in 2016

C. the Solar Plug­In Station has gone on show internationally    

D. Chicago is promoting the use of electric vehicles

3.According to the passage，how many of the following statements are TRUE?

a. Tesla Roadster is a kind of plug­in electric vehicle.

b. The Solar Plug­In Station uses solar power to charge all of the cars.

c. Chicago is a city，which is rich in oil.

d. The Solar Plug­In Station consists of underground battery packs.

e. Scott Emalfarb is optimistic about the future of plug­in electric vehicles.

A．2.         B．3.            C．4.               D．5.

4.The passage implies that when the Solar Plug­In Station becomes popular，________.

A. more visitors will come to Chicago                                    

B. the citizens of Chicago will be able to go to work faster

C. more space for electric vehicles will be needed

D. the cost of electric vehicles will be lower than traditional cars

5.What would be the best title for the passage?

A. Chicago Will Soon Be Full of Electric Vehicles                 

B. Chicago Calls on People to Buy Electric Vehicles

C. Chicago Fights for Its Bid to Host the 2016 Olympics      

D. Chicago Shows Its Solar­powered Recharging Stations