语法填空What will cars be like in the future? Maybe we can sit in a car that can dri

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语法填空

What will cars be like in the future? Maybe we can sit in a car that can drive all by 【小题1】（it） in a few years’ time. In fact, with the rapid development of modern science and technology, the self-driving car is becoming a 【小题2】（real） on busy streets.

According to a report by Google, the world-famous search engine, its self-driving cars 【小题3】（travel） more than 700,000 miles on roads in California so far. The first self-driving car 【小题4】（make） by Google came out in 2009. There are cameras on the top of the car, 【小题5】 allow the computer in the car to draw a 3-D map of the surroundings. In addition, Google says that its self-driving cars can discover hundreds of separate 【小题6】（object）at the same time, which might be an improvement on the human driver experience. As 【小题7】 result, there will be far 【小题8】（few） traffic accidents caused by careless driving.

However, self-driving cars are much too 【小题9】（expense） right now. Scientists across the world are doing their best to bring down the costs, 【小题10】 hundreds of thousands of dollars to the cost that most people can afford.

上一题下一题 0.99难度语法填空更新时间:2019-06-27 12:43:31

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同类题1

After years of research and tests, the hybrid car was developed and put on the market. It's an interesting and exciting new improvement in today's world as we look for better ways to protect the quality of the air we breathe and protect our natural resources.

The quality of our air is affected by many different things. But one of the largest sources of air pollution is the burning of fossil fuel such as coal and gasoline which is used to power a car's engine. The Environmental Protection Agency（EPA）has set national standards to help control the level of harmful pollutants sent off into the air, and the automobile industry has acted by producing the hybrid car that uses less gas and therefore causes less pollution.

A hybrid car is a combination of a regular car that runs on gasoline and an electric car that is battery-powered. Some people tend to think that since the hybrid car is partially electric, you have to plug it in to charge it. But that's not how it works. The 144 volt battery pack（电池组）is actually recharged through the energy that is produced when the car's brakes are used. This is referred to as "regenerative braking", because it generates electricity.

Although the hybrid car still runs on gasoline most of the time, this helps it use less gas than a regular car. When the driver stops at a traffic light, the engine automatically shuts off to save fuel. Then, as soon as the driver puts the car in gear and touches the gas pedal（踏板）, the engine starts backing up.

Have you ever ridden in a car with someone which ran out of gas？That probably wouldn't happen if you were riding in a hybrid car. It flashes a warning on its computer screen that says, "I am low on gas. "When it completely runs out, the warning reads, "YOU ARENOW OUT OF GAS！"Then the electric power supply starts to work to let the driver travel a few more miles to a gas station.

【小题1】Which of the following is true according to the passage？

A．The hybrid car will be put on the market.

B．Hybrid cars run faster than regular cars.

C．When the hybrid car stops at a traffic light, the driver will get a warning.

D．The burning of fossil fuel is one of the largest sources of air pollution.

【小题2】According to the passage, the word "hybrid" refers to_________.

A．a high-tech discovery	B．energy saving
C．a new invention	D．a combination of two things

【小题3】"Regenerative braking" is an important process of the hybrid car because _________.

A．it allows the car to come to a quick stop

B．it gives the driver a smoother ride

C．it produces energy to charge the battery

D．it can control the speed of the car

【小题4】Which of the following is the reason for developing hybrid cars?

A．They use less gas than regular cars.

B．They' re safer to drive than most cars.

C．They' re more modern than other cars.

D．They cost less than regular cars.

同类题3

With an improved economy，many travelers have been buying first or business class seats，leaving fewer for upgrades（升级）.Here are some strategies for getting a free upgrade.

1. Fly a lot.

This is the most common way to earn a free upgrade. Most airlines reserve some spaces for travelers who fly at least 5，000 miles per year. Five years ago，this meant half or more of domestic（国内的）first class travelers sat up front for free. But now，airlines are selling more high-price seats，so on popular routes it is not unusual for more than 20 travelers to compete for one or two upgrades. But on routes with fewer business class travelers，free upgrades remain more plentiful.

2. Use miles.

If you're not a frequent traveler but still have some miles to fly，you may be able to use them for an upgrade. Be careful，though，as many airlines now ask not just for miles but also a cash co-pay. One example: on flights to Europe，American Airlines charges 5，000 miles，plus $110，for a one-way upgrade from discounted economy class to business class. For most domestic upgrades，American Airlines wants 15，000 miles plus $ 75.

3. Get lucky.

Sometimes airlines overbook coach（经济舱），and a few travelers get no seats. Agents try to ensure the airline's most loyal travelers get the nod（被选中）. Agents usually have some flexibility to make sure the plane is full and takes off on time. So it's the easiest way for them to do it-they might upgrade someone else out of order.

4. Save a life.

Flight attendants don't usually upgrade passengers, even when empty seats remain. Doctors and nurses who answer an emergency call are sometimes an exception. If they comfort a passenger, flight attendants might allow them to sit in business or first class for the rest of the flight.

【小题1】What might be the main topic of the passage?

A．The ways to get upgraded on a plane.

B．How to get on the flight safely and on time.

C．The best ways to get free flight tickets.

D．How to save a life on a plane quickly.

【小题2】Who can have the chance to get a free upgrade?

A．The person who always obeys the rules on the flight.

B．The person who doesn't have to look after a patient.

C．The person who is a friend of the flight attendants.

D．The person who flies a lot and has a long flying distance.

【小题3】Why might medical personnel be allowed to sit in business or first class sometimes?

A．Because they would like to talk with flight attendants kindly.