—Don’t press the button，John.—What if I______...

—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

If ________ in the elevator, please press the emergency button immediately.

A. trapped　　　　 B. trapping

C. having trapped D. to be trapped

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

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

If you find yourself hitting the snooze button(闹钟延时按钮) every morning, don't blame yourself. Your work schedule could be to blame.

Research now shows that, for many of us, our work schedules don't go with our natural body clocks—and experts are urging employers to take notice. Sleep is a “strategic resource” that most companies are ignoring. When work schedules are aligned with people's natural sleep patterns, they produce higher quality and more innovative work because they are more focused, less stressed and generally healthier. The opposite is also true—when employees are not getting enough sleep they are more likely to make major mistakes and suffer from workplace injuries.

But it's not just about the amount of sleep you get. It's important that people recognize every living thing, from primitive bacteria to human beings, has a biologically determined internal body clock. This determines whether you are a night owl(夜猫子), an early bird or somewhere in the middle. We don't have any choice. “It's like feet，” said Till Roenneberg, a professor of chronobiology(生物钟学). “Some people are born with big feet and some with small feet, but most people are somewhere in the middle.”

Many companies start the workday at 8 a.m. or 9 a.m., putting their work schedules in disagreement with their employees' body clock. This mismatch, along with the pressure to be productive and be available to respond to email or take calls at all hours of the day and night, means that many people suffer from what is called “social jet lag” .

1.The underlined word “aligned” in Paragraph 2 means “________”.

A. matched　　 B. cooperated

C. conflicted　　 D. shortened

2.What does Till Roenneberg' s remark mean?

A. The amount of sleep you get counts much.

B. An early bird does better than a night owl.

C. We are born to have a body clock.

D. Most people have neither too big nor too small feet.

3.If people suffer from “social jet lag”， they will ________.

A. not be as clever as other people

B. fail to finish their daily tasks

C. fail to adjust their body clock

D. act as if they were in the wrong time zone

4.What is the best title for the passage?

A. Body clock and good work habits

B. Late for work? Maybe not your fault

C. How to improve your work efficiency

D. Urgent need to change your body clock

高三英语阅读理解困难题查看答案及解析

What did the man do?

A.He started the phone. B.He broke the buttons. C.He fixed the screen.

高三英语短对话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

听下面一段较长对话，回答以下小题。

1.Which number did the woman press?

A. 1.　　 B. 2.　　 C. 3.

2.What do we know about History 107?

A. It is very difficult.　　 B. It is quite popular.　　 C. It is very useful.

3.What does the man offer to do for the woman?

A. Put her through to the number.

B. Put her on a waiting list.

C. Give her some coins for the call.

高三英语长对话困难题查看答案及解析