I needn’t have been in that hurry. The flight...

I needn’t have been in that hurry. The flight to Chongqing ______ due to the foggy weather.

A. has cancelled B. was cancelled

C. will be cancelling　 D. had cancelled

高三英语单项填空中等难度题查看答案及解析

I needn’t have been in such a hurry. The flight to Hong Kong _____ due to the typhoon.

A. has cancelled　　　　　　　　 B. was cancelled

C. will be canceling　 　　　　 D. had cancelled

高三英语单项填空中等难度题查看答案及解析

We hurried all the way to the airport, only ______ that the flight had been cancelled because of the foggy weather.

A. being told      B. to be told          C. having told       D. to have been told

高三英语单项填空中等难度题查看答案及解析

Birds have been observed to sleep while in flight for the first time ever. Because of some flights that can often last several days, weeks, or even longer, some sea birds have long been thought of being able to fall fully asleep while “on the wing”, though it was not proven.

Now researchers say they have evidence which shows birds can sleep in flight. Scientists from Max Planck Institute used a sample of 15 adult female frigate birds (军舰鸟) to test the sleep patterns. Each bird had a small electroencephalogram (EEG脑电图) sensor fitted to record changes in the animals’ brain activity as they flew for up to 10 days and over 3,000 kilometres.

The readings showed that during flight the birds could sleep using one hemisphere of the brain, or both together. It was known that frigate birds could sleep with one “half” of the brain, which allows them to keep one eye open and “connected” to the awake half.

According to the research, it is sleeping technique used by birds for finding directions. “Frigatebirds sleep mostly while circling in rising air and keep the eye connected to the awake hemisphere facing the direction of flight, suggesting that they watch where they are going,” says the study.

Despite the ability to fall “fully” asleep, the birds were found to do it less in the air compared to one land. They slept “very little and less deeply while in flight. This suggests that though it is possible, falling totally asleep is not very good during flight which will need the bird’s attention.

The researchers said the short sleep could be serving as “power naps” to keep the birds going until they return to land. Further study could help us understand why lack of sleep affects humans so badly.

1.The phrase “on the wing” in the first paragraph may mean __________.

A. flying.　　 B. fighting.

C. sleeping.　　 D. thinking.

2.How do the sleeping birds find the directions?

A. They sleep less when they are circling in rising air.

B. They keep one eye connected to the awake part.

C. They pay special attention to the way.

D. They have a good sleep before they start flying.

3.What is the best title of the text?

A. A Study on Birds in Flight　　 B. Flying Birds’ Brain Activity

C. Birds Can Sleep in Flight　　 D. Sleep With Half of the Brain

高三英语阅读理解中等难度题查看答案及解析

There is no need_____，because the flight has been cancelled．

高三英语单项填空简单题查看答案及解析

Did you know that there are actually people who have paid for a flight to the moon? In the future, there will be a lot more opportunities to travel to faraway places than now… perhaps even as far as the moon. As people adventure further and further away and as planes, trains, cars, and rocket ships become faster, is it safer to have these vehicles controlled by humans or by computers?

While many flights by plane are controlled automatically by machines, most people today wouldn’t let their car drive itself. That’s because currently the autopilot function on your car can only keep it on the same course you are travelling on. It won’t turn the car right or left. It won’t stop if an animal jumps in the way. However, cars today can sense when something is too close and warn the driver with flashing lights and alarms. Many cars also have GPS（global positioning systems） that tell drivers which road to take and when to turn. These systems, unlike human drivers, never get lost. In the future, it is easy to believe that your car will be better able to drive itself with the aid of computers that can determine the position of your car and the speed it should travel at.

In addition to computers being ‘smarter’ than people regarding the best way to go or knowing how close another vehicle is, computers don’t get sick, tired, or angry. This means they won’t make the same mistakes that people make when they are not having a good day. While responding with emotion is a good thing when choosing the best way to deal with a friend’s personal problem, it may not be such a good thing when deciding what to do at the wheel of a fast-moving vehicle.

So what are the disadvantages of autopilot systems? Maybe one disadvantage is that a small computer problem could cause a serious accident. It could also be argued that in unexpected situations, computers might not be able to respond appropriately; some decisions require human emotions. Another problem might be that if everything were controlled by computers or robots, people wouldn’t have any jobs.

1.What is the best title for the passage?

A. The Development of Autopilot

B. Technology of Future Travel

C. A New Driving System

D. Computerized Cars

2.Which of the following is the disadvantage of an autopilot system?

A.　 It won’t make the same mistakes as people do.

B.　 It can point out the best route for the driver.

C.　 It might not respond properly to unexpected situations.

D. It does not have human emotions to influence its function.

3.If some falling rocks roll down toward your car, the autopilot on your car will_______.

A. inform you of the danger

B. turn the car right or left

C. do nothing about it

D. stop the car

4.What’s the author’s attitude towards the autopilot?

A. Approving.　　 B. Objective.　　 C. Negative.　 D. Doubtful.

高三英语阅读理解中等难度题查看答案及解析

We ___have hurried all the way to the airport—the flight was called off because of the foggy weather.

A. mustn’t    B. couldn’t     C. needn’t    D. wouldn’t

高三英语单项填空中等难度题查看答案及解析

We ________ have hurried all the way to the airport - the flight was called off because of the foggy weather．

A． mustn’t                B． couldn't         C． needn’t             D． wouldn’t

高三英语单项填空中等难度题查看答案及解析

(2013·江苏南通市二模)We ________ have hurried all the way to the airport — the flight was called off because of the foggy weather.

A．mustn't　      B．couldn't

C．needn't      D．wouldn't

高三英语单项填空中等难度题查看答案及解析

229. Look! The shop isn’t open yet. We _____.

高三英语单项填空简单题查看答案及解析