Flying devices called drones(无人机) may be one of the most important technologies of the future.
The number of jobs for people who know how to design, build and control them is increasing. Because of this increase, several U.S. universities have started offering degrees in unmanned aircraft systems, or UAS.
One of these universities is the University of Washington in Seattle. Ward Handley is seeking a master’s degree in UAS at the university. When the drone program first began, he did not think it was a good idea. “Drones can be used to invade privacy(侵犯隐私).” He said. But later, Handley changed his opinion. He said, “I think there are good enough purposes for them.”
The FAA (the part of the U.S. government that controls air travel and traffic) is creating new rules to control the use of drones, however. A new law requires drone owners to register(登记) their drones. People who do not register their drones could face fines of up to US$20,000.
The new rules may also present problems for students. One problem is finding a legal place to fly.
Students at Blue Mountain Community College fly inside the college gym. In Seattle, University of Washington students test their drones in a big room.
Christopher Lum, a scientist at the University of Washington, helps students explore how drones can safely share the sky with regular aircraft. Lum explained why they test drones inside a building, “We need to register our aircraft and get permission to fly outside. That process can take months.”
At this time, Kansas State University is the only school with permission to offer unmanned aircraft flight classes to students outside. The FAA selected Kansas State University and 15 other universities to be part of a national research group.
Lum and some of his students recently moved their research to Australia. Australia has fewer rules limiting drones. A professor at Western Washington University also took his department’s drones to Canada for the same reason.
1.Degrees in UAS were created in several U.S. universities because of ________.
A. the increasing interest in the field
B. the increasing employment opportunities
C. the support from the government
D. the development of this technology
2.Why didn’t Handley think the drone program was a good idea at first?
A. Drones can be used for bad purposes.
B. The use of drones was very limited.
C. Few people can benefit from the program.
D. The university didn’t attach great importance to the program.
3.According to Lum, why does he teach flight classes inside a building?
A. It’s safer for the students.
B. It’s very expensive to register the aircraft.
C. It takes a very long time to get official permission.
D. He hasn’t got permission from the university.
4.What can we infer from the last two paragraphs?
A. Australia is promoting the use of drones.
B. Kansas State University is the first to offer a UAS degree.
C. Australia has fewer rules than Canada to control the use of drones.
D. The U.S. has more rules than Canada to control the use of drones.
高二英语阅读理解困难题
Flying devices called drones(无人机) may be one of the most important technologies of the future.
The number of jobs for people who know how to design, build and control them is increasing. Because of this increase, several U.S. universities have started offering degrees in unmanned aircraft systems, or UAS.
One of these universities is the University of Washington in Seattle. Ward Handley is seeking a master’s degree in UAS at the university. When the drone program first began, he did not think it was a good idea. “Drones can be used to invade privacy(侵犯隐私).” He said. But later, Handley changed his opinion. He said, “I think there are good enough purposes for them.”
The FAA (the part of the U.S. government that controls air travel and traffic) is creating new rules to control the use of drones, however. A new law requires drone owners to register(登记) their drones. People who do not register their drones could face fines of up to US$20,000.
The new rules may also present problems for students. One problem is finding a legal place to fly.
Students at Blue Mountain Community College fly inside the college gym. In Seattle, University of Washington students test their drones in a big room.
Christopher Lum, a scientist at the University of Washington, helps students explore how drones can safely share the sky with regular aircraft. Lum explained why they test drones inside a building, “We need to register our aircraft and get permission to fly outside. That process can take months.”
At this time, Kansas State University is the only school with permission to offer unmanned aircraft flight classes to students outside. The FAA selected Kansas State University and 15 other universities to be part of a national research group.
Lum and some of his students recently moved their research to Australia. Australia has fewer rules limiting drones. A professor at Western Washington University also took his department’s drones to Canada for the same reason.
1.Degrees in UAS were created in several U.S. universities because of ________.
A. the increasing interest in the field
B. the increasing employment opportunities
C. the support from the government
D. the development of this technology
2.Why didn’t Handley think the drone program was a good idea at first?
A. Drones can be used for bad purposes.
B. The use of drones was very limited.
C. Few people can benefit from the program.
D. The university didn’t attach great importance to the program.
3.According to Lum, why does he teach flight classes inside a building?
A. It’s safer for the students.
B. It’s very expensive to register the aircraft.
C. It takes a very long time to get official permission.
D. He hasn’t got permission from the university.
4.What can we infer from the last two paragraphs?
A. Australia is promoting the use of drones.
B. Kansas State University is the first to offer a UAS degree.
C. Australia has fewer rules than Canada to control the use of drones.
D. The U.S. has more rules than Canada to control the use of drones.
高二英语阅读理解困难题查看答案及解析
It just may be the world’s most costly vacuum cleaner ( 吸尘器). The price of CleanSpace One is eleven million dollars. But yet, it has a big job to do. Recently, researchers in Switzerland said they planned to build this new cleaning machine.
CleanSpace One will not be for use in homes or businesses. It will be shot into space to help remove thousands of pieces of space junk floating around up there.
Last year, we reported on the problem of space junk. Over time, many unused spacecraft have hit each other far above the Earth. Big pieces break into thousands of small pieces. Sometimes they fall back into the atmosphere (大气层) and burn up. But when they do not, it creates big problems.
Scientists fear that if something is not done to remove these objects, it may soon become too dangerous to send people and machines into space. There is a large chance that they might hit some of this junk. So that is why the Swiss researchers are developing the new machine.
CleanSpace One is not really a vacuum cleaner. It will not be used to take away space junk. But scientists plan to move it close to an old satellite that is no longer being used. Then a claw-like instrument will catch the satellite, and force it back through the atmosphere. There, the satellite will be destroyed by the heat of friction (摩擦) with the air.
Researchers say that all they need to do is slow down the speed of some of these unwanted objects. Once they begin to move more slowly, they will fall back to the Earth. There is little chance that they will fall through the atmosphere and harm the people or things below.
1.Space junk is created when .
A. unused spacecraft hit each other
B. people in space throw away rubbish
C. a new spaceship is sent up
D. an old spaceship creates friction with the air
2.What’s the danger of space junk?
A. It will pollute space.
B. It will hurt people on the Earth.
C. It will hit a spaceship.
D. It will burn in the atmosphere.
3.Unwanted objects will fall back to the Earth when .
A. they are made to move slowly
B. they meet other objects in space
C. they are not used for years
D. they are near the atmosphere
4.The passage is most probably a .
A. science research paper B. science fiction story
C. newspaper ad D. science news report
高二英语阅读理解中等难度题查看答案及解析
Earthquakes may rightly be ranked as one of the most destructive forces known to man: since records began to be written down, it has been estimated that earthquake-related fatalities () have numbered in the millions, and that earthquake-related destruction has been beyond calculation. The greater part of such damage and loss of life had been due to collapse of buildings and the effects of rockslides, floods, fire, disease, tsunamis, and other observable events resulting from earthquakes, rather than from quakes themselves.
The great majority of all earthquakes occur in two specific geographic areas. One such area covers the Pacific Ocean and its bordering landmasses. The other extends from the East Indians to the Atlas Mountains, including the Himalayas, Iran, Turkey and the Alpine regions. It is in these two great belts or zones that ninety percent of all earthquakes take place; they may, however, happen anywhere at any time.
This element of unknown has for centuries added greatly to the dead and horror surrounding earthquakes, but in recent times there have been indications that earthquake forecast may be possible. By analyzing changes in animal behavior, patterns of movements in the earth's shell, variations in the earth's force of attraction, and the frequency with which minor earth shakes are observed, scientists have shown increasing success in expecting when and where earthquakes will strike. As a result, a worldwide earthquake warning network is already in operation and has helped to prepare for (and thus lessen) the vast destruction that might otherwise have been totally unexpected.
It is doubtful that man will ever be able to control earthquakes and get rid of their destructiveness altogether, but as how and why earthquakes happen become better understood, man will become more and more able to deal with their possible damage before they occur.
60. Which of the following statements is true according to the passage?
A. Earthquakes destruction is declining.
B. Man is capable of conquering earthquakes.
C. Man is no longer fearful of earthquakes.
D. Earthquake forecast is improving.
61. We can infer from the passage that quakes _______ .
A. mostly strike in oceans and mountains
B. may happen anywhere at any time
C. are unperceivable in masses of land
D. are hardly the direct cause of fatalities
62. The underlined phrase "This element of unknown" in Paragraph 3 refers to__.
A. the extension of earthquake zones
B. the percentage of earthquake occurrences
C. when and where earthquakes may occur
D. what big damage earthquakes may cause
63. Man's research on earthquake forecast at present is to _________ .
A. lower the frequency of earthquakes
B. release the energy that causes earthquakes
C. reduce the loss from earthquake disasters
D. analyze the relationship between different earthquakes
高二英语阅读理解简单题查看答案及解析
AIDS may be one of the most undesirable diseases in the world. Luckily, there is now hope for AIDS patients.
According to a recent paper published in the New England Journal of Medicine, Chinese scientists have successfully used CRISPR technology - a method of gene editing - to treat a patient with HIV. While it may not have cured the patient fully, it still represents a huge step forward in fighting the disease.
The patient was a 27-year-old Chinese man who was diagnosed with both AIDS and acute lymphoblastic leukemia (急性淋巴细胞白血病), a type of blood cancer. Despite his hopeless situation, doctors offered him a glimmer of hope: a bone marrow (骨髓) transplant to treat his cancer and an experimental treatment for his HIV.
They used this opportunity to edit the DNA in bone marrow stem cells from a donor before transplanting the cells into the patient.
Specifically, the treatment involved using the gene-editing tool CRISPR-Cas9 to delete a gene known as CCR5, which encodes a protein that HIV uses to get inside human cells. Without the gene, HIV is unable to infiltrate cells.
Talking about the gene, lead scientist Deng Hongkui told CNN, “After being edited, the cells - and the blood cells they produce - have the ability to resist HIV infection.”
Nineteen months after the treatment, the patient’s leukemia was in complete remission (缓解) and donor cells without CCR5 remained, according to the research paper.
Though the transplant did not cure the man’s HIV, it still showed the effectiveness of gene-editing technology, as there was no indication of any unintended genetic alterations - a major concern with past gene therapy experiments.
Amesh Adalja, a senior scholar at the Johns Hopkins Centre for Health Security in the United States, who was not involved in the study, praised the treatment.
“They did a very innovative experiment. It was safe,” he told Live Science. “It should be viewed as a success.”
Deng believes gene-editing technology could “bring a new dawn” to blood-related diseases such as AIDS and sickle cell anemia (镰刀形细胞性贫血).
“Thanks to this new technology, the goal of a functional cure for AIDS is getting closer and closer,” he said.
1.The technology of CRISPR is to ___________.
A.transplant cells B.encode genes
C.remove proteins D.produce cells
2.What was the result of the treatment?
A.CCR5 and other genes in the patient’s cells were changed.
B.The number of cells infected by HIV decreased.
C.Some of the patient’s blood cells could resist HIV infection.
D.HIV no longer existed in the patient’s cells.
3.What do we know about the experiment?
A.It provided an innovative way to cure AIDS patients.
B.It pointed out the problems of gene therapy.
C.It could offer a safe treatment for blood-related diseases.
D.It’s the first experiment to use gene-editing technology to treat AIDS.
高二英语阅读理解中等难度题查看答案及解析
“Check it again, you need to be sure.”This culture rule may sound , but it is one of the most powerful culture rules. I took a lot of things for granted. In fact, I used to people who often check things, such as their car engine oil, the house security, even the children in the bedroom. I didn’t realize that this rule would cost me dearly.
One day the owner of the supermarket I worked in asked me to make a(n) to the investors(投资者) whom we wanted to become partners with. I was given a month to it.
The day of the presentation arrived. I left home at 7 am with the intention of getting to the office . On the way , my car climbed over a bunch of rocks and I heard a loud noise. I stepped on the brake and got out of the car to check what happened: I had a flat tire.
“Oh dear, please not now .” I quickly ran behind the car to the spare tire, only to be again :there was none. I began to think of the moments when my wife would me to get one each time I drove the car out. But I was too to listen to her.
It was already 8 am and it seemed like I had only one left. I had to run to the supermarket. It should me about 45 minutes to get there . I the car and ran as fast as I could , hoping I would have the to get there on time .
it took me longer than I had expected. I arrived at the twenty minutes late. I to the guests for my lateness and did my best to give a good presentation. Finally, the supermarket the deal, but I was suspended(停职) for two months without pay.
1.A. familiar B. foolish C. simple D. difficult
2.A. make fun of B. pay attention to C. catch up with D. look up to
3.A. changing B. following C. signing D. disobeying
4.A.contribution B. analysis C. presentation D. comparison
5.A. apply for B. prepare for C. arrange for D. account for
6.A. early B. easily C. safely D. shortly
7.A. soft B. hard C. smooth D. rough
8.A.carefully B. lightly C. quickly D. bravely
9.A. check B. get C. move D. repair
10.A. shocked B. pleased C. bored D. confused
11.A. challenge B. remind C. help D. encourage
12.A. selfish B. sensitive C. stubborn D. independent
13.A.wish B. choice C. minute D. plan
14.A. give B. spare C. allow D. take
15.A. left B. passed C. rented D. stopped
16.A. condition B. idea C. luck D. goal .
17.A. Deliberately B. Unfortunately C. Strangely D. Consequently
18.A. market B. party C. office D. station
19.A. appealed B. reported C. referred D. apologized
20.A. accepted B. won C. offered D. finished
高二英语完型填空中等难度题查看答案及解析
Studies show the electronic devices people have made much use of ________ music may be causing hearing loss in many people.
A. enjoy B. to enjoy
C. enjoying D. enjoyed
高二英语单项填空中等难度题查看答案及解析
阅读下面短文,在文中空白处填入一个恰当的单词或括号内单词的正确形式。
For many young people, 1.(go) to university is one of the most important 2.(stage) of their lives. It is the time when young people will move out of 3.(they) homes to live with other people, often strangers. 4.(especial) in the US, people often travel very far from home to study. It is a time to be 5.(independence).
At university, you 6.(teach) by lectures and professors who are leading figures in their study. The opportunity to learn from and to discuss with them is 7.drives some people to apply to university. Students are required to choose a major that they wish to study. Apart 8.the academic benefit, life at university can also allow students 9.(develop) their interests in many fields.
Therefore, university is a place 10.you attain knowledge, to develop your values and accept those who may be different.
高二英语语法填空中等难度题查看答案及解析
CALGARY, CANADA---It was one of the most important phone calls Bruce Burrell has ever received, a call warning that a flood was headed Calgary’s way.
“I got a phone call about five in the morning on Thursday from Len McCharles, who was on watch at the time, and he said “there has been big flooding in Canmore and it’s heading this way,” said Burrell, the head of the Calgary Emergency Management Agency.
“I got up immediately, turned on the morning news, saw the pictures from Canmore and then called McCharles back. I said “open the Emergency Operations Centre.”
Burrell was in the EOC for 48 hours straight and it wasn’t until Burrell left the centre for the first time that the disaster(灾难)hit him.
“Once you step outside and you actually see it and hear it, it paints a completely different picture from what you thought you would be dealing with.”
Calgary firefighters came to help the Calgarians who were influenced by floodwaters. Keal Prince, captain of the Calgary Fire Department remembers how a young boy lost his finger while helping a woman remove debris(瓦砾)out of her house.
“As his finger got cut off it went into a fully loaded dumpster(装好的垃圾箱)”Prince said. “People had worked hours to get the dumpster loaded and now they’re working tirelessly, quickly to unload that dumpster, looking for that finger.”
“We had to remove a lot of debris to find that finger. Luckily, the finger was found and it was reattached(重新接上),”Prince added.
Burrell is proud of what the city has achieved so far. And he says the city couldn’t have done it without hundreds of unsung heroes. “There were a lot of unbelievable things that went on during the flood and I think that is what Calgarians need to be proud of.”
1.On the morning of Thursday, Burrell ______.
A. recogised his house was flooded
B. was called to go to Canmore to help people
C. got to know from others about a coming disater.
D. opened his house and found something was wrong.
2.Hearing what had happened, Burrell ________.
A. called the centre to collect pictures
B. reported the event to the TV station
C. went to the flooded areas immediately
D. gave orders for work to be started at once
3.It seemed that the young boy ____.
A. was a great help
B. had a happy ending
C. looked for his finger hours alone
D. was hurt while unloading the dumpster
4.We can infer from the last paragragh that Burrell ______.
A. thinks highly of people in Calgary
B. has received praise from Calgarians
C. thinks it’s his duty to protect the city
D. feels the firefighters need more training
高二英语阅读理解中等难度题查看答案及解析
Bamboo is one of the nature’s most surprising plants. Many people call this plant a tree, but it is a kind of grass.
Like other kinds of grass, a bamboo plant may be cut very low to the ground, but it will grow back very quickly. A Japanese scientist recorded one bamboo plant that grew almost 1.5 meters in 24 hours! Bamboo grows almost everywhere in the world except Europe. There are more than 1,000 kinds of bamboo that grow around the world on both mountains and plains.
Not all bamboo looks the same. Some bamboo plants are very thin. They may only grow to be a few centimeters wide while others may grow to more than 30 centimeters across. This plant also comes in different colors, from yellow to black to green.
Many Asian countries have been using bamboo for hundreds of years. They often use bamboo for building new buildings. As a matter of fact, the cables(绳索) that hold up the hanging bridge across the Min River in Sichuan are made of bamboo. The bridge has been in use for more than 1,000 years, and is still holding strong.
In Africa, engineers are teaching poor farmers how to find water using bamboo. These African countries need cheap ways to find water because they have no money, and their fields often die from no rain and no water. It seems that bamboo is one of the best things they can use. Bamboo pipes and drills(钻) can help to make the poor thirsty fields to be watered.
1.How is bamboo like grass?
A.It is thin and easy to cut. B.It grows everywhere.
C.It grows quickly after its cut short. D.It is short and green.
2.The underlined sentence “while others may grow to more than 30 centimeters across.” means “Some other bamboo plants may grow to be very _______.”
A.short B.strong C.thick D.tall
3.From the text we know ______.
A.most people call bamboo plant trees
B.a bamboo plant may grow 4.5 meters in three days
C.the bamboo plant changes its colors when it grows
D.a bridge held by bamboo cable was built thousands of years ago
4.Why did the engineers teach the poor farmers in Africa to make use of bamboo?
A.Because it is cheap. B.Because it is colorful.
C.Because it drills fast. D.Because it is used by Asians.
5.Which of the following is NOT true?
A.There are many different kinds of bamboo with different colors.
B.Cables made of bamboo can last for over a thousand years.
C.Bamboo can be used for buildings, bridges and watering projects.
D.Bamboo plants are able to grow well in any part of the world.
高二英语阅读理解中等难度题查看答案及解析
You may know the Eiffel Tower as one of the most famous man-made monuments in the world, and you’d be absolutely right! Read on to learn about the history of the great Eiffel Tower.
Travelers from around the world flock(蜂拥)to Paris, France, to visit the Eiffel Tower, making it the most visited paid monument in the entire world! In fact, in 2010, the Eiffel Tower welcomed its 250 millionth visitor!
The history of the Eiffel Tower
The Eiffel Tower was named after the engineer Gustave Eiffel, whose company designed and built the famous monument. Construction began in January of 1887 and was completed in only two years. Their plan was to finish the tower in time to be the entrance arch for the World’s Fair in 1889. This fair celebrated the 100th anniversary of the French Revolution, which took place from 1789 to 1799.
The height competition
Located on the Champs de Mars, the tower is the tallest structure in Paris. It was the tallest man-made structure in the world for 41 years until the Chrysler Building in New York surpassed(超过) it. Then the spire(塔尖) on the top of the tower was added, raising its height to 17 feet taller than the Chrysler Building. It is now 1,063 feet tall! There are two replicas(复制品) of the Eiffel Tower in the world: a half scale model at the Paris Hotel in Las Vegas and a full-sized monument of a similar (but not exact) design in Tokyo, Japan.
Three shades of wonder
Some pictures make the Eiffel Tower look like a dark iron color. But it is, in fact, bronze. Not only that, but the tower is actually painted three different shades to make it appear even taller: darkest on the bottom and lightest on the top.
1.The Eiffel Tower was constructed to ________.
A. show great respect for Gustave Eiffel
B. make Paris the most visited city in the world
C. show the French people’s construction skill
D. celebrate the 100th anniversary of the French Revolution
2.Which of the following does the author mention in the passage?
A. The political meaning of the Eiffel Tower.
B. The disadvantages of the Eiffel Tower.
C. The location of the Eiffel Tower.
D. The cost of the Eiffel Tower.
3.Where can you find a structure similar to the Eiffel Tower according to the passage?
A. In New York.
B. In Las Vegas.
C. In Los Angeles.
D. In Florida.
4.The main purpose of the passage is to ________.
A. tell visitors where to find the replicas of the Eiffel Tower
B. raise people’s awareness of protecting the Eiffel Tower
C. offer people some information about the Eiffel Tower
D. call on people to visit the Eiffel Tower
高二英语阅读理解中等难度题查看答案及解析