The auto company succeeded in developing a ne...

The auto company succeeded in developing a new type of new energy vehicle, ________ countless failure.

A.experiencing B.to experience C.to have experienced D.having experienced

高三英语单项填空困难题查看答案及解析

The company designed a new car last month and about 500 cars of this type ________ in the

factory next month.

A. were produced                     B. will produce

C. have been produced                D. will be produced

高三英语单项填空简单题查看答案及解析

The auto industry, aviation (航空) giants and lots of new companies are increasingly entering the race toward producing flying cars and air taxis, many of which are said to be fully electric. On the surface, there are so many innovations happening that it’s easy to forget that the world hasn’t even seen a fully autonomous car yet, let alone an electric flying vehicle you can park in your driveway.

In fact, there are several hurdles before people are riding through the air. “They are short on technology, and they are short on regulation.” said Jennings-Bates, vice president of a car company.

Uber and Boeing, both world famous companies, have announced ambitious plans for air taxis. However, the types of vehicles they have in mind would require magical electric batteries that don’t exist yet.

Whether the United States actually needs flying cars remains relatively unclear. Aviation experts say that air vehicles help solve congestion problems in big cities. “Today, we have a lot of traffic congestion on the roadways,” said Laurie Garrow, associate director for the Center for Urban and Regional Air Mobility at Georgia Tech. “Air taxis would provide a solution for that.” Others argue that putting traffic in the skies doesn’t solve very much. “We aren’t going to change the world in terms of traffic with flying cars,” said Jennings-Bates. “At best, it may take the place of traffic in the area, which is arguably less pleasant.”

Some experts say it’s not a question of whether flying cars will take off. Instead, it’s a question of how soon the concepts would be safe enough for humans to occupy. “Everyone is very excited and they’re coming up with very different designs,” Garrow said. “But you have a lengthy certification process that will need to go through to make sure the craft and flights are safe.” She estimates that it’ll be about 20 years before the U.S. sees more than test flights.

1.What can we infer about flying cars from Paragraph 1?

A.They are fully electric. B.They are unavailable yet.

C.They need special driveway. D.They equal autonomous cars.

2.What does the underlined “hurdles” in Paragraph 2 refer to?

A.Ambitious plans. B.Big problems.

C.Electric batteries. D.Current innovations.

3.According to Garrow, what’s the main concern about flying cars?

A.Test flights. B.Design.

C.Production. D.Safety.

4.What does the text mainly talk about?

A.Why we should produce flying cars. B.How hard the race of making flying cars is.

C.How close we are to seeing flying cars. D.What people’s opinions are about flying cars.

高三英语阅读理解中等难度题查看答案及解析

Scientists have developed a new type of smart bandage (绷带) that can signal the type of bacterial (细菌的) infection it’s protecting, just like a traffic light, as well as release the right type of drugs on demand. The traffic light system works just like this: Green means no bacteria or a low concentration of bacteria, yellow means drug-sensitive (DS) bacteria responsive to standard antibiotics (抗生素) and causes antibiotic release, and red means drug-resistant (DR) bacteria that need extra help to be wiped out.

In testing the bandage on mice, the research team was able to successfully treat both DS and DR infections using the new method. However, the common methods of sensing resistance are limited by time, the requirement for professional personnel, and expensive instruments. Moreover, the abuse of antibiotics causes the accelerated process of bacterial resistance.

It’s easy to see how a simple bandage and light could overcome some of these limitations. Treatment doesn’t have to wait for a doctor to make a diagnosis, and the bandage can get the right sort of drugs applied at the earliest opportunity. What’s more, the person wearing the bandage gets real-time feedback on what’s happening with the infection, if there’s an infection at all. The researchers say it offers numerous benefits over existing treatments that make use of light, including photodynamic therapy or PDT.

We’ve been seeing quite a few upgrades to the traditional bandage in recent years, thanks to advances in science — like the nanofiber mesh that attracts bacteria and draws some of it out, speeding up the healing process. Then there’s the novel bandage for treating burns, which stops bacteria from multiplying and lowers the risk of infection.

The more work that a bandage can do while it’s protecting a wound, the better. Efforts to improve bandages continue and now we've got a bandage that not only releases antibiotics, but also tells the patient exactly what’s going on too.

1.What is the smart bandage mainly designed to do?

A.Avoid the use of antibiotics. B.Clear out harmful bacteria.

C.Detect bacterial infections. D.Increase treatment options.

2.What is the advantage of the smart bandage?

A.It saves much time and cost. B.It removes the risk of infection.

C.It prevents the bacterial resistance. D.It improves doctor-patient relationship.

3.What can be inferred from the last two paragraphs?

A.Traditional bandages are out of use now.

B.More smart bandages will be developed.

C.Progress in science calls for more research.

D.People are urged to study medical science.

4.What does the text focus on?

A.A successful test on mice. B.A colour-changing bandage.

C.Sensing drug-resistant bacteria. D.Preventing abuse of antibiotics.

高三英语阅读理解中等难度题查看答案及解析

The company has launched several types of cars this year, and one_______ appeals to the young.

A. in  return    B. in particular  C. in addition     D. in turn

高三英语单项填空中等难度题查看答案及解析

Our company’s development will not stand________of anyone, nor will it threaten anyone.

高三英语单项填空简单题查看答案及解析

Haier Company produced a new type of refrigerator of high quality and pretty appearance; its only ___is that it takes up too much room.

高三英语单项填空中等难度题查看答案及解析

The company takes too _____ a view of possible export markets, thus limiting it’s development in the international trade.

A. narrow　　　　 　　 　 B. optimistic

C. sensible　　　　　　　 D. independent

高三英语单项填空中等难度题查看答案及解析

阅读下面材料，在空白处填适当的内容（1个单词）或括号内单词的正确形式。

Recently a new type of reusable mask developed by a Ningbo-based company 1.(enter)the market. Unlike surgical masks, this new product, uses a nanomaterial membrane (纳米膜), rather than the 2.(type) melt-blown fabric, to filter (过滤) bacteria and viruses.

Laboratory tests and 3.third party report show that the mask has achieved the same quality standards of the N95 mask, which can filter 95 percent of tiny objects with a diameter of at least 75 nanometers. The masks are also comfortable, easy to breathe 4.. What’s better, depending on the user's setting and wear time, the mask can 5.(use)up to 20 times.

The mask can also resist repeated sterilization (杀菌) with boiling water, disinfectant,6.alcohol, meaning that people only need to change the filter after wearing it for 12 hours and wash it regularly in hot water at a temperature between 56 and 707.(degree) Celsius for long-term use.

The mask is currently divided into two grades 8.(price) at 6 yuan ($0.89) and 9 yuan,9.(respective). Both are equipped with two replaceable filters. Besides, compared with adult masks, the masks made especially for children are 10.(skin-friendly).

高三英语语法填空中等难度题查看答案及解析

This is the new type of plane________ parts are made in China.

高三英语单项填空中等难度题查看答案及解析