3D printing is a recent technological develop...

3D printing is a recent technological development that has started making its way into the marketplace. It is a way of making 3D objects from computer models. 3D printing works by adding together layers of material. This pattern is repeated until the layers form a shape for almost any purpose. The almost unlimited possibility of 3D printing is quickly leading to a revolution in how things are made and produced. As with most technology, 3D printing may help to create things that could benefit humans. However, it could also be used to create things that could harm other people.

One of the promising aspects (方面) of 3D printing is that it may help doctors treat patients in need. Currently, 3D printing is being used to create prostheses (假体) that helps replace missing noses and eyeballs, thus greatly cutting down on the usual wait time for a new prostheses. Dentists are also using 3D printers to create custom toothbrushes for patients’ teeth. The toothbrush fits a person's teeth well, which means that they get a much cleaner mouth than with regular toothbrushes. Many scientists see the potential for 3D printing to create replacement organs for people who need organ transplants. This would save lives as it remove the need for such patients to wait for an organ donation (捐献).

Although many people believe 3D printing is a positive technology that could help humans, it may also have the opposite effect. There is a recent controversy (争议) about the ability of 3D printing to produce arms such as guns. Recently, one organization announced the plans to produce a 3D plastic gun. Anyone with the proper technology and with the determination to make a gun could potentially do so. Will the future of 3D printing provide hope or danger to humans?

1.According to the article, how does 3D printing work?

A.It helps companies enter the marketplace.

B.It adds together layers of material together to make a shape.

C.It uses 3D objects to make computer models.

D.It uses printers to make different models of computers.

2.According to the article, what is one possible future benefit of 3D printing?

A.It may help to prevent deaths. B.It can create controversy.

C.It can make a toothbrush. D.It could produce computers.

3.Which paragraph talks about the controversial aspects of 3D printing?

A.Paragraph 1. B.Paragraph 2.

C.Paragraph 3. D.All of the above.

4.What can be inferred from the article?

A.It is not yet known whether there will be more benefits than dangers in 3D printing.

B.Most of companies will start to use 3D printing technology in the future.

C.Soldiers will benefit greatly from advances in 3D printing.

D.The government will probably forbid 3D printing because it is too dangerous.

高一英语阅读理解中等难度题查看答案及解析

There's a new frontier in 3D printing that's beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isn't stopping there.

Food production

With a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. Not everybody can do that---it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to" re-create forms and pieces" of food that are" exactly the same,” freeing cooks to complete other tasks. In another restaurant, all of the dishes and desserts it serves are 3D-printed, rather than farm to table.

Sustainability(可持续性)

The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food printing could probably contribute to the solution. Some experts believe printers could use hydrocolloids( 水解胶体)from plentiful renewables like algae(藻类) and grass to replace the familiar ingredients(烹饪原 料). 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock "food" that lasts years on end, freeing up shelf space and reducing transportation and storage requirements.

Nutrition

Future　 3D　 food　 printers　 could　 make　 processed　 food　 healthier.　 Hod　 Lipson,　 a professor at Columbia University, said, "Food printing could allow consumers to print food with customized nutritional content, like vitamins. So instead of eating a piece of yesterday 's bread from the supermarket, you' d eat something baked just for you on demand."

Challenges

Despite recent advancements in 3D food printing，the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste( 糊状物)before a printer　 can　 use　 them,　 and　 the　 printing　 process　 is　 quite　 time-consuming,　 because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients，because meat and milk products may easily go bad. Some experts are doubtful about food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.

1.What benefit does 3D printing bring to food production?

A. It helps cooks to create new dishes.

B. It saves time and effort in cooking.

C. It improves the cooking conditions.

D. It contributes to restaurant decorations.

2.What can we learn about 3D food printing from Paragraph 3?

A. It solves food shortages easily.

B. It quickens the transportation of food.

C. It needs no space for the storage of food.

D. It uses renewable materials as sources of food.

3.What is the main factor that prevents 3D food printing from spreading widely?

A. The printing process is complicated.

B. 3D food printers are too expensive.

C. Food materials have to be dried.

D. Some experts doubt 3D food printing.

4.What could be the best title of the passage?

A. 3D Food Printing: Delicious New Technology

B. A New Way to Improve 3D Food Printing

C. The Challenges for 3D Food Production

D. 3D Food Printing: From Farm to Table

高一英语阅读理解困难题查看答案及解析

An Australian company, Smart Car Technologies, has developed a system that lets drivers know when they’re speeding. When the technology becomes commercially available, it could help lead-footed drivers avoid tickets and also save lives. The company that developed the product hopes to convince Australian government agencies to put the technology into use in their automobile fleets.

The product, called Speed Alert, links real-time location data and speed obtained with the help of GPS to a database of posted speed limits stored in a driver’s PDA or programmable mobile phone. The setup of the product does not need to be hooked up to a car’s speedometer. In fact, it is entirely portable. It will also work with newer phones and PDAs that have built-in GPS receivers. If a driver exceeds the speed limit, the speed is shown and an alert sounds.

Michael Paine, an Australian vehicle design engineer and traffic safety consultant, was hired to analyze the product. He told Live Science that his colleagues in the road safety field are “very enthusiastic” about what they’re now calling “intelligent speed alert.” Other research, according to Paine, shows that 40 percent of all traffic deaths involve speeding. There is also a potentially controversial future use: “Since the system is so portable, it would be easy to make it a requirement for teenage drivers to always use a speed alert device when driving,” Paine said. “The system even has the capability to record speeding violations, so parents can monitor their teenage drivers.”

The product will soon go on sale in Sydney.

1. What’s the purpose of the new product?

A. To inform us of the new car system.   B. To introduce some improvement in cars.

C. To limit certain drivers to safe driving.  D. To popularize the built-in car system.

2.The second paragraph mainly talks about        .

A. the project of the built-in product     B. why the system becomes popular

C. the functions of GPS in cars         D. how the product is programmed

3.Which of the following is true of Speed Alert according to Michael Paine?

A. Most of the traffic deaths can be avoided.     B. Speeding violations can be easily found out.

C. The system will excite some teenage drivers.   D. The product will not be available for adults.

4.What can be the best title of the passage?

A. Speed Alert and Its Future Use.             B. Progress in Car-making Science.

C. Warning for Adventurous Drivers.           D. New In-Car Device against Speeding.

高一英语阅读理解中等难度题查看答案及解析

With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.

高一英语单项填空困难题查看答案及解析

Volunteers Wanted

Ecuador

A village in Ecuador has recently developed a ecotourism (生态旅游) project that needs volunteers with a background in tourism. This is an unpaid, challenging job that might last one year. You must be enthusiastic and speak good level of Spanish. You will need to cover your food and lodging on your own.

To find out more information, e-mail volunteer@ ecuador.org.

Bali

Would you like to teach English or computer skills to our local school children in a lovely village in the mountains of Bali? There are also western children homeschooling here, some of whom need help with their daily programs. For volunteers of homeschooling, you are required to have baby-sitter experience. Please contact me for more information at Bali@yahoo.com.

Dominica

Experience nature and adventure in Dominica, the island of the Caribbean. Be part of a happy team, doing things from gardening, to building tree houses, to maintaining hydro systems.

For more information please e-mail info@Dominica.com.

1.A college graduate who speaks good Spanish and is interested in ecotourism had better work in ______.

A. an island of Dominica　　 B. a village in Ecuador

C. the mountains of Bali　　 D. a house in Caribbean

2.One who wants to teach small children English will contact ______.

A. volunteer@org　　　 B. info@Dominica.com

C. volunteer@ ecuador.org　　 D. Bali@yahoo.com

3.Which is NOT a required task for a volunteer at the island of Dominica?

A. Gardening.

B. Building tree houses.

C. Swimming in the pool.

D. Maintaining hydro systems.

高一英语阅读理解中等难度题查看答案及解析

Technology is developing so rapidly that________for only a year , my cellphone is out-of-date .

高一英语单项填空中等难度题查看答案及解析

With the development of science and technology , more new technology____ to the fields of IT.

高一英语单项填空中等难度题查看答案及解析

The fast development of modern technology has not only provided people with more income, but also enable them to enjoy long weekends and holidays. Never before have so many people traveled to so many different parts of the world and, with the help of fast, comfortable forms of modern transport, more and more people are tempted to（试图）leave their homes to see more of the world. It seems as if there are travelers everywhere.

People travel because traveling benefits them in a number of ways. First, it enables them to get much pleasure from sight-seeing and photo-taking. Second, traveling makes them fully relaxed and ready to get back to work happily. Third, it offers them an opportunity to visit old friends and make new friends as well. Finally, it allows them to see different customs, learn new things, gain new experience and enables them to come back with a broader mind.

With so many advantages to traveling, I think people should be encouraged to travel from time to time, especially on holidays, if their pocket and health permit.

1. Traveling benefits people in.　　　　　 ways

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

2.According to the passage, with the fast development of modern technology, what can people do?

A. People can enjoy long weekends and holidays

B. People have less money

C. people can do more shopping

D. People become lazy

3.What’s the best title of this passage?

A. Why people have more income

B. Why people like to work

C. Why people travel

D. Why people become relaxed

高一英语阅读理解中等难度题查看答案及解析

Our need to communicate with each other has been a driving force in the development of technology. In the 20th century we have seen the invention of the radio, television, telephone and fax, and today the Internet has opened up a whole new way of communicating. We now have instant messaging services such as ICQ or China's QQ and chat rooms where people can join group discussions. They mean increasing choices for when, where and how to communicate, and more importantly, with whom.

While most people use the Internet to keep in touch with friends and family, a growing number of people use QQ and chat rooms to meet and chat with strangers. Because the Internet allows a certain amount of anonymity, users can be more open making it easier to make new friends. One user said that everyone is equal online, and age and appearance become unimportant. This makes it easier for people to communicate with each other.

Finding new friends is not the only reason people use chat rooms. The Internet can bring together like-minded people who want to discuss their favourite topics. There are chat rooms for certain sports, types of music, styles of art, in fact, just about any interest you can imagine, and many that you can't! Whatever unusual interest you might have, if you search on the Internet, there is a good chance that you will find someone, somewhere in cyberspace, willing to talk to you about it-right now.

However, there are problems with going online. It is possible for cyber-criminals to steal information such as credit card details while you are online, and there is always the chance that a new friend is not who he or she claims to be. One girl was really disappointed when she discovered that her new cyberfriend who wrote poems for her, was actually copying all the poems from magazines. But for all the problems that might come up, instant messaging services and chat rooms are here to stay, putting in touch with friends, family and strangers of similar interests.

1.People use the Internet to　　　　　　　　　 .

A. chat to friends and meet family

B. meet strangers and write poems

C. chat to friends, family and strangers

2.What does anonymity (para. 2) mean?

A. The state of being unknown.

B. The state of being friendly.

C. The state of being online.

3.What types of topics will people discuss on the Internet?

A. Sports, types of music, styles of art.

B. All kinds of topics.

C. Only topics that the Internet allows.

4.What is an example of problems with going online?

A. Some people may send you poems copied from magazines.

B. Your credit card details could be stolen.

C. There might be no one to chat with.

高一英语阅读理解中等难度题查看答案及解析

American public education has changed in recent years. One change is that increasing numbers of American parents and teachers are starting independent public schools called charter schools.

In 1991, there were no charter schools in the United States. Today, more than 2300 charter schools operate in 34 states and the District of Columbia. 575000 students attend these schools. The students are from 5 years of age through 18 or older.

A charter school is created by groups of parents, teachers and community members. It is similar in some ways to a traditional public school. It receives tax money to operate a number of students. The charter school must prove to local or state governments that its students are learning. These governments provide the school with the agreement, or charter that permits it to operate.

Unlike a traditional public school, however, the charter school does not have to obey most laws governing public schools. Local, state or federal governments cannot tell it what to teach.

Each school can choose its own goals and decide the ways it wants to reach those goals. Class sizes are usually smaller than in many traditional public schools. Many students and parents say teachers in charter schools can be more creative.

However, state education agencies, local education-governing committees and unions often oppose charter schools. They say these schools may receive money badly needed by traditional public schools. Experts say some charter schools are doing well while others are struggling.

Congress provided 200 million dollars for establishing charter schools in the 2006 federal budget. But, often the schools say they lack enough money for programs. Many also lack needed space. District officials say they have provided 14 former school buildings for charter education. Yet charter school supporters say officials should try harder to find more space.

Charter Schools in America

高一英语填空题简单题查看答案及解析