Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the " tank test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构)of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. Vne pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger.
The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot' s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
1.By doing the "tank test", the engineers can find out _______.
A. the amount of air in the plane
B. the power of the airplane engines
C. the. pressure inside and outside the plane
D. the strength of the plane structure
2.What will happen to the plane under the "tank test"?
A. It will be broken.
B. It will be made stronger.
C. It will be filled with water.
D. It will be tested by pilots,
3.According to the text, why are test flights most dangerous?
A. The plane may explode in the air.
B. The pilot may lose control of the plane.
C. The engines may be damaged.
D. Too much air may get into the plane.
4.What might be the most suitable title for the text?
A. How Airplanes Are Made and Tested
B. The Importance of Flying Safely
C. The Danger of Testing Airplanes
D. Two Important Tests on Airplanes
高二英语阅读理解简单题
Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the " tank(贮水池) test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构)of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode (爆炸)in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger.
The most dangerous test happens when the new plane is going through test flights in the air. The pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
1.By doing the "tank test", the engineers can find out _______.
A.the amount of air in the plane | B.the strength of the plane structure |
C.the pressure inside and outside the plane | D.the power of the airplane engines |
2.What will happen to the plane under the "tank test"?
A.It will be broken. | B.It will be made stronger. |
C.It will be filled with water. | D.It will be tested by pilots, |
3.According to the text, why are test flights most dangerous?
A.The plane may explode in the air. | B.The pilot may lose control of the plane. |
C.The engines may be damaged. | D.Too much air may get into the plane. |
4.What might be the most suitable title for the text?
A.Two Important Tests on Airplanes | B.The Importance of Flying Safely |
C.The Danger of Testing Airplanes | D.How Airplanes Are Made and Tested |
高二英语阅读理解中等难度题查看答案及解析
Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the “tank test”. A modern airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构) of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger,
The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
1.By doing the “tank test”, the engineers can find out ________.
A.the power of the airplane engines B.the amount of air in the plane
C.the strength of the plane structure D.the pressure inside and outside the plane
2.What will happen to the plane under the “tank test”?
A.It will be tested by pilots. B.It will be broken.
C.It will be made stronger. D.It will be filled with water.
3.According to the text. why are test flights most dangerous?
A.Too much air may get into the plane. B.The plane may explode in the air.
C.The pilot may lose control of the plane. D.The engines may be damaged.
4.What might be the most suitable title for the text?
A.How Airplanes Are Made and Tested B.Two Important Tests on Airplanes
C.The Importance of Flying Safely D.The Danger of Testing Airplanes
高二英语阅读理解中等难度题查看答案及解析
Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the " tank test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure (结构)of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure (压力) on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. Vne pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger.
The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines (发动机) are all shut off at once. The plane begins to fall like a stone. It is the pilot' s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
1.By doing the "tank test", the engineers can find out _______.
A. the amount of air in the plane
B. the power of the airplane engines
C. the. pressure inside and outside the plane
D. the strength of the plane structure
2.What will happen to the plane under the "tank test"?
A. It will be broken.
B. It will be made stronger.
C. It will be filled with water.
D. It will be tested by pilots,
3.According to the text, why are test flights most dangerous?
A. The plane may explode in the air.
B. The pilot may lose control of the plane.
C. The engines may be damaged.
D. Too much air may get into the plane.
4.What might be the most suitable title for the text?
A. How Airplanes Are Made and Tested
B. The Importance of Flying Safely
C. The Danger of Testing Airplanes
D. Two Important Tests on Airplanes
高二英语阅读理解简单题查看答案及解析
A new report said that different types of plants can release some chemical into the air to help other plants. These chemical warnings all have the same purpose — to spread information about one plant's disease or infestation so other plants can defend themselves. But exactly how plants receive and act on many of these signals is still mysterious.
In this week’s Proceedings of the National Academy of Sciences, researchers in Japan offered some explanations. They had identified one chemical message and traced it all the way from release to action.
The scientists looked at tomato plants infested by a common pest, the cutworm. The researchers studied leaves from exposed and unexposed plants. They found one compound showed up more often in the exposed plants. The substance is called Hex Vic. When the scientists fed Hex Vic to cutworms, it knocked down their survival rate by 17%. The scientists identified the source of Hex Vic, and sprayed it lightly over healthy plants. Those plants were then able to start producing the cutworm-killing Hex Vic. Researchers confirmed that uninfected plants have to build their own weapons to fight off bugs and disease. How do they know when to play defense? They are warned first by their friendly plant neighbors.
It is a complex tale, and it may be happening in more plant species than tomatoes. It may also be happening with more chemical signals that are still unknown to us. Further studies are needed to increase agricultural efficiency.
1.Which is the way used by plants to warn their neighbors?
A. Using of winds.
B. Identifying the chemicals.
C. Releasing some chemicals.
D. Being exposed early.
2.It can be inferred from the text that ________.
A. farmers may benefit from the further studies
B. the phenomenon may be happening in less plant species than tomatoes
C. there are not chemical signals
D. plants are warned first by their neighbors
3.What’s the function of Hex Vic?
A. It sprays over healthy plants.
B. It shows up more.
C. It cures the disease.
D. It damages the cutworm’s body.
4.The passage is likely to appear in ________.
A. a newspaper advertisement
B. a physics textbook
C. a science magazine
D. a finance report
高二英语阅读理解中等难度题查看答案及解析
. We all demanded the new type of machine ____________ put into use as soon as possible.
A. refer to B. referred to be C. refer to be D. referring be
高二英语单项填空简单题查看答案及解析
In part of China, some people still have difficulty gaining ________to social services.
A.assistance | B.help | C.access | D.benefit |
高二英语单项填空中等难度题查看答案及解析
As a first responder, you never know what type of situation you might walk into, or who you’ll meet along the way. That’s definitely been the case for Jeffrey Lanenberg, a 51-year-old paramedic(急救医务人员) since 1984.
Ten years into the job, Lanenberg received a call that reported that a man in his early 30s had fallen down in the Mall of America. When Lanenberg and his partner arrived at the scene, they found the young male face down on the ground. He had gone unconscious, making weak attempts to breathe. His wife stood beside him holding their small son in horror. They quickly rushed to defibrillate(除颤) and calm the man to keep him under control. After Lanenberg dropped the patient off at the neighboring hospital, he thought about the man and his family for a long time.
Lanenberg thought he had experienced everything under the sun until one random visit to Office Max three years ago, where he met a man repeatedly walk back and forth while staring at him. As it turned out, the man was the patient he had saved 20 years earlier.
"You gave me 20 years more than I ever thought I’d have," the man said. He thanked Lanenberg repeatedly and told him he had someone he wanted him to meet. He stepped around the corner and reappeared with a 20-something-year-old man. Lanenberg instantly knew that it was the son he had seen standing by his mother all those years ago.
"That day changed my life," Lanenberg said. "Before that, everything was about work…When I talk to my beginner-training class, I tell them you never know the impact you can have on someone’s life."
1.What did Lanenberg do with the young man?
A.He gave the man the first aid. B.He cured the man at the scene.
C.He only sent the man to hospital. D.He took care of the man’s wife and son.
2.What did Lanenberg think of the encounter with the man?
A.It was unbelievable. B.It was a common routine.
C.It was a matter of course. D.It was a dangerous situation.
3.Why was the man thankful to Lanenberg?
A.Lanenberg helped bring up his little son.
B.Lanenberg donated to support his family.
C.Lanenberg gave him the present happy life.
D.Lanenberg taught his son to be a new doctor.
4.How did the meeting change Lanenberg’s life?
A.He changed his attitude to his job.
B.He was rewarded with much money.
C.He got a promotion to be a team leader.
D.He took up teaching work to train newcomers.
高二英语阅读理解困难题查看答案及解析
Mobile technology has created new ways for all types of learning styles to help discover new information.If you want to teach yourself things,here are some apps that will help you.
●Coursera
Perhaps one of the biggest advancements in the history of e﹣learning,Coursera has teamed up with top school like Duke,Stanford,and John Hopkins to bring you direct access to real college courses in psychology,computer science,business,and technology.Each course features pre﹣recorded videos,projects,and quizzes,just like you'd receive inside the classroom.
●Lumosity
This app features three﹣day sessions that target many different areas of brain activity:memory,speed,problem solving,and thinking flexibility.Each day you can participate in a timed session to sharpen mental intelligence and keep track of your progress over time.
●Duolingo
If you've ever wanted to learn a new language but didn't know where to start or couldn't afford expensive apps,you need to check out Duolingo.This app teaches more than a dozen languages by breaking up exercises into mini games.The developer of Duolingo claims that 34 hours of learning in this app equals a full term's worth of school.
●EarthViewer
Ever wonder what Earth looked like a million years ago?There's no better way to know than to look for yourself.Earth Viewer takes you on a digital journey to see how the landscape(地貌) and face of the planet has developed over the past 4.5 billion years,and view climate changes,sea level adjustments,or the evolution of famous cities.
1.Which app makes higher education courses available to its users?
A. Coursera.
B. Lumosity.
C. Duolingo.
D. EarthViewer.
2.What can be inferred about Lumosity?
A. It is the most effective app for language learning.
B. It guarantees you an admission to a key college.
C. It will save all your money upon brain training.
D. It can be helpful to our learning performance.
3.What is special about EarthViewer?
A. It offers wonderful journeys to us.
B. It shows us lots of beautiful city views.
C. It explains how the earth developed to us.
D. It warns us of the effects of climate changes.
高二英语阅读理解中等难度题查看答案及解析
My husband Jeff and I moved into our new home in Scottsbluff last year just before Christmas. I did not have the or energy to carry out my traditional Christmas decorating and baking activities. What was the point, anyway? It was going to be a Christmas after all.
, the neighborly nature of west Nebraska residents started to trickle (陆续来临) in.
There was a on the door one evening. It was Jeff’s new colleague, John Smith, and his wife, Phyllis. The Smiths had stopped by to us with a loaf of homemade bread. They pointed out a on the porch (门廊). Apparently the doorbell wasn’t working in the cold snowy weather and we had a visit from the Browns, our across-the-street neighbors, who brought us a Christmas card and more Christmas cookies.
The feelings brought by these thoughtful gestures lasted longer than the food.
As Jeff and I were pre-Christmas snow from our driveway, Ernie Guzman came over from next door to us to dig out.
Then, we received an invitation to a Christmas Eve meal with our neighbors, Ernie and Nancy Sommer, and their —a 90-year-old lady, who also had no family in the immediate area with whom to spend the holiday.
Our Christmas Eve was quite merry, thanks to our . Our Christmas morning was special, thanks to the Smiths’ gift of bread. I was so for these gestures of welcome, especially during the holidays.
This year, we were again unable to be with our families for Christmas. The and work schedules just made things too difficult. that sense of Christmas isolation (孤立) all too well, we decided to try to round up some other folks who were in the holidays.
Lonely people are all around us, but most of us notice them. Just take a look around you. Sometimes, the smallest gesture can make a world of difference.
1.A. chance B. anxiety C. time D. ability
2.A. lonely B. free C. merry D. usual
3.A. Therefore B. However C. Somehow D. Meanwhile
4.A. sign B. knock C. card D. note
5.A. invite B. welcome C. drive D. send
6.A. tree B. flower C. mail D. package
7.A. forgot B. missed C. arranged D. received
8.A. warm B. deep C. true D. mixed
9.A. buying B. clearing C. preparing D. giving
10.A. teach B. urge C. help D. forbid
11.A. prepare B. share C. taste D. exchange
12.A. guest B. aunt C. maid D. partner
13.A. folks B. relatives C. neighbors D. colleagues
14. A. call B. greeting C. meeting D. breakfast
15.A. sorry B. eager C. grateful D. ready
16.A. season B. expense C. distance D. situation
17.A. Knowing B. Showing C. Studying D. Discovering
18.A. happy B. busy C. alone D. active
19.A. always B. usually C. finally D. seldom
20.A. careful B. kind C. pretty D. patient
高二英语完形填空中等难度题查看答案及解析
—What about the package of food?
—You’d better ________ it at the service counter before entering the bookstore.
A. allocate B. purchase C. expose D. deposit
高二英语单项填空简单题查看答案及解析