Don't press the red button ,_______you will s...

Don't press the red button ,_______you will set off the alarm.

A. but         B. or                   C. so                D. and

高三英语单项填空中等难度题查看答案及解析

—Don’t press the button，John.

—What if I________？

A．did　　 B．would　　 C．will 　 D．shall

高三英语单项填空中等难度题查看答案及解析

The Mars 2020 rover(02W), which sets off for the Red Planet this year, will not only search for traces of ancient life, but pave the way for future human missions, NASA scientists said Friday as they introduced the vehicle.

The rover has been constructed in a large, sterile room at the Jet Propulsion Laboratory in Pasadena, near Los Angeles, where its driving equipment was given its first successful test last week.

Shown to invited journalists on Friday, it is scheduled to leave Earth in July 2020 from Floridas Cape Canaveral, becoming the fifth US rover to land on Mars seven months later in February.

“It's designed to seek the signs of life, so we’re carrying a number of different instruments that will help us understand the geological and chemical context on the surface of Mars,” deputy mission leader Matt Wallace told AFP.

Among the devices on board the rover are 23 cameras, two “ears” that will allow it to listen to Martian winds, and lasers used for chemical analysis.

Approximately the size of a car, the rover is equipped with six wheels like the former US rover, Curiosity, allowing it to travel along rocky land.

Speed is not a priority for the vehicle, which only has to cover around 200 yards(180 metres) per Martian day -approximately the same as a day on Earth.

Fuelled by a tiny nuclear reactor, Mars 202(has seven-foot-long(2 metres) articulated arms and a drill to crack open rock samples in locations scientists identify as potentially suitable for life.

We are hoping to move fairly quickly. We'd like to see the next mission launched in 2026 which will get to Mars and pick up the samples, put them into a rocket and finally bring them back to the Earth, "said Wallace. NASA’s Mars 2020 will remain active for at least one Martian year, which is around two years on Earth.

1.What does the underlined part “pave the way” in Paragraph 1 mean?

A.Making preparations B.Finding suitable landing sites

C.Setting up research centers. D.Constructing roads.

2.What can we know about the Mars 2020 rover?

A.It looks much like a car with six wheels.

B.It is an updated of the US rover Curiosity.

C.It is solar-powered and can crack open rock samples.

D.It is able to perform different tasks on Mars in search of the signs of life

3.If you search the passage on the website of China Daily, where can you probably find it?

A.Lifestyle B.Regional

C.World D.Culture

4.What is the main idea of the passage?

A.The Mars 2020 rover has successfully passed its first driving test.

B.NASA is planning a new round of space exploration

C.Future human missions on Mars are on the way

D.A new rover will be launched to carry out scientific research on Mars

高三英语阅读理解中等难度题查看答案及解析

When you are _______ about which button to press on the complicated machine, you can either read the user’s guide for guidance or fax us for specific instruction. Don’t ______ the trial-and-error method.

高三英语单项填空中等难度题查看答案及解析

To ________ the web page, you press this button, which makes the most recent information appear.

A．refresh　     B．promote

C．tear　     D．adopt

高三英语单项填空中等难度题查看答案及解析

—I pressed the button just now, but no copies came out.

—The machine _______ well. You must have made an error in operation.

A. runs B. ran

C. had run D. has run

高三英语单项填空中等难度题查看答案及解析

Have you ever pressed the pedestrian button at a crosswalk and wondered if it really worked?　 They’re called “placebo(安慰剂）buttons”一buttons that mechanically sound and can be pushed，but provide no functionality.

In New York City, only about 100 of the 1, 000 crosswalk buttons actually function. Crosswalk signals were generally installed before traffic jam had reached today’s levels.

But while their function was taken over by more advanced systems—such as automated lights or traffic sensors — the physical buttons were often kept, rather than being replaced at further expense. Other cities，such as Boston，Dallas and Seattle，have gone through a similar process, leaving them with their own placebo pedestrian buttons. In London, which has 6, 000 traffic signals，pressing the pedestrian button results in a reliable “Wait” light. But that doesn’t necessarily mean that the “green man”— or “pedestrian stage” in traffic signal design profession — will appear any sooner.

“We do have some crossings where the green light comes on automatically, but we still ask people to press the button because that enables accessible features,’’ said Glynn Barton, director of network management at Transport for London.

These features, such as blind tracks and hearable traffic signals, help people with visual disorder cross the road and only function when the button is pressed. As for the lights, a growing number of them are now combined and become a part of an electronic system that detects traffic and adjusts time frequency accordingly (giving priority to buses if they’re running late, for example), which means that pressing the button has no effect.

According to Langer, a Harvard psychologist, placebo buttons give us the illusion (错觉)of control — and something to do in situations where the alternative would be doing nothing. In the case of pedestrian crossings, they may even make us safer by forcing us to pay attention to our surroundings. “They serve a psychological purpose at the very least,” she added.

1.Why are the physical buttons still kept in some cities?

A. Because it may cost money to replace them.

B. Because they remain as memories of a city.

C. Because do have real functions in traffic.

D. Because they can result in reliable lights.

2.Which of the following word can replace the underline word “features” in Paragraph 4?

A. Functions.

B. Uses.

C. Equipment.

D. Facilities.

3.If you pressed a “placebo button” in London, what would happen?

A. All traffic would be affected.

B. Some kind of sound might appear.

C. Pedestrians came first to cross the road.

D. “Green man” were bound to show up earlier.

4.What can we know about “palcebo buttons” from Langer’s words?

A. They can really control traffic.

B. They serve little functions.

C. They may work mentally.

D. They can help the blind.

高三英语阅读理解中等难度题查看答案及解析

Whenever we see a button, we are eager to press it because we know something will happen. This is true in most cases, for example on a doorbell and on the “on/off” button on the TV. But some buttons are actually fake, like the “close” button on a lift.

Many people are in the habit of pressing the “close” button because they don’t have the patience to wait for the lift doors to shut. But lifts’ “close” buttons are a complete scam (骗局), at least in the US － the doors will not close any faster no matter how hard you press.

It started in the 1990s when the Americans with Disabilities Act was passed in the US, making sure that all lifts stayed open long enough so that people with disabilities could enter. Only US firefighters and repairmen can use the buttons to speed up the door-closing process if they have a code or special keys.

But to normal lift riders, the buttons aren’t completely useless. According to psychologists, fake buttons can actually make you feel better by offering you a sense of control.

“Perceived (能够感知的) control is very important. It reduces stress and increases well-being,” Ellen J. Langer, a psychology professor, said, “ having a lack of control is associated with depression.”

Experts have revealed that a lot of buttons that don’t do anything exist in our lives for this same purpose. For example, many offices in the US have fake thermostats (温度调节器) because people tend to feel better when they think they can control the temperature in their workspace.

But psychologists found it interesting that even when people are aware of these little “white lies”, they still continue to push fake buttons because as long as the doors eventually close, it is considered to be worth the effort.

“That habit is here to stay,” John Kounios, a psychology professor, said. “Even though I have real doubts about the traffic light buttons, I always press them. After all, I’ve got nothing else to do while waiting. So why not press the button in the hope that this one will work?”

1.　 What was the author’s main purpose in writing the article?

A. To analyze the functions of fake buttons.

B. To describe some different kinds of fake buttons.

C. To explain the advantages and disadvantages of fake buttons.

D. To explore people’s different habits when it comes to pushing buttons.

2.　 In America, the “close” buttons on lifts _______.

A. are fake for the convenience of disabled people

B. work only when people press them hard for a while

C. were specially designed to give people a sense of control

D. cannot speed up the process of closing the door in any case

3.　 The underlined part “for this same purpose” in Paragraph 6 refers to _______.

A. making people more patient

B. giving people perceived control

C. helping people to build up confidence

D. making people with depression feel better

4.According to John Kounios, people who press fake buttons ______.

A. should give up this habit

B. probably do so to kill time

C. consider what they do to be meaningless

D. don’t know that what they press is fake

高三英语阅读理解中等难度题查看答案及解析

Whenever we see a button, we want to press it because we know that something will happen. This is true in most cases, for example, on a doorbell. But some buttons are actually fake(假的), like the “close” button on a lift.

Many people are in the habit of pressing the “close” button because they don’t have the patience to wait for the lift doors to shut. But lifts’ “close” buttons are a complete trick, at least in the US － the doors will not close any faster no matter how hard you press.

It started in the 1990s when the Americans with Disabilities Act was passed in the US, making sure that all lifts stayed open long enough so that people with disabilities could enter. Only US firefighters and repairmen can use the buttons to speed up the door-closing process if they have a code or special keys.

But to normal lift riders, the buttons aren’t completely useless. According to psychologists, fake buttons can actually make you feel better by offering you a sense of control.

“A sense of control is very important. It reduces stress and increases well-being,” said Ellen J. Langer, a psychology professor at Harvard University. Experts also added that a lot of buttons that don’t do anything exist in our lives for this same purpose.

For example, pedestrian crosswalk buttons don’t live up to their names either. Pressing them used to help make the traffic signals change faster, but that was before computer controlled traffic signals were introduced.

But psychologists found it interesting that even when people are aware of these little “white lies”, they still continue to push fake buttons because as long as the doors eventually close, it is considered to be worth the effort.

1.What is the author’s purpose in writing the text?

A. To explore the functions of fake buttons.

B. To describe different fake buttons.

C. To analyze various habits of pushing buttons.

D. To explain the disadvantages of fake buttons.

2.What can we learn about the “close” buttons on a lift in America?

A. They work when people press them hard.

B. They were designed for a sense of control.

C. They never speed up the door-closing process.

D. They take the safety of the disabled into account.

3.What can we infer about pedestrian crosswalk buttons?

A. They can make people feel better.

B. They help computers work faster.

C. They can control the traffic signals.

D. They help pedestrians cross safely.

4.Which may be the best title for the passage?

A. Buttons in the USA.　　 B. Buttons Always Lie

C. Buttons May not Work　　 D. “Close” Buttons on Lifts

高三英语阅读理解中等难度题查看答案及解析

Why don't you take off your clothes and have them washed? They will soon dry________ in the sun.

高三英语其他题中等难度题查看答案及解析