“This has gone as well as I could have dreamed, and I can fly in the near future!” Yes, Alyssa Carson, a now-18-year-old astronaut from Baton Rouge, Louisiana is capable. For her, riding the most aggressive roller coaster in the park is not a big deal. If all goes according to her plans, NASA will send her to Mars in 2033, making her the first human to step foot on the planet. She will spend two to three years living there, growing food, performing science experiments and searching for signs of life. “The Martian is actually very accurate,” she said. “A lot of things that happened in the movie are similar to what is going to happen.” She has devoted her entire life to preparing for her journey.
Her love for space started when she watched a cartoon called The Backyardigans at the age of 3. Five animal pals on imaginary adventures in their backyard, including one part-a mission to Mars. “I thought ‘This red planet is so cool!’” she said. “I started watching videos of rovers’ landing on Mars. I had a large map of Mars in my room which I would look at every day. I started getting telescopes so I could look at space.
At 7, her father took her to space camp in Huntsville, Alabama. “That was the weekend of my life.” she said. I got to learn everything I had been wanting to know and I got to see a life-size rocket.” She cherished the rocket so much that she returned 18 times. At 12, she became the first person in history to attend all three NASA space camps in Huntsville, Alabama; Quebec, Canada and Izmir, Turkey.
At first she mastered the basics of space and how humans have explored it throughout time. As she got older she simulated (模拟) missions, trying to reach a destination in gravity-free, weightless zones.
When she was 9, she met NASA astronaut Sandra Magnus. The experienced explorer told her she was her age when she decided to go to space. At that moment Alyssa knew her love of space was not a hobby. “I did the same thing as other kids, like switching my mind about careers, wanting to be a teacher or the president one day,” she said. “But the way I always thought about it was I would become an astronaut, go to Mars, come back, and then be a teacher or the president.”
1.Which of the following about Alyssa Carson is right?
A.She has created model missions to Mars.
B.She is the youngest one who has completed astronaut training.
C.She is likely to be the first human to perform different tasks on Mars.
D.She has visited the space camp in Huntsville,Alabama for nearly 30 times.
2.What’s supposed to be stressed by referring to NASA astronaut Sandra Magnus?
A.The power of space dreams.
B.The popularity of space travel.
C.The importance of career choices
D.The excitement of her space experiences.
3.What can’t be inferred from the article?
A.The Backyardigans is a cartoon for kids.
B.Alyssa will have many tasks to complete if she lands on Mars successfully.
C.Alyssa was forced to learn the basics of space science by her father.
D.Alyssa enjoys riding roller coasters like many other young people.
4.What does the author intend to do in writing the passage?
A.To introduce American space industry.
B.To promote the values of American teens.
C.To encourage tours to Mars.
D.To present a rising American space star.
高三英语阅读选择中等难度题
“This has gone as well as I could have dreamed, and I can fly in the near future!” Yes, Alyssa Carson, a now-18-year-old astronaut from Baton Rouge, Louisiana is capable. For her, riding the most aggressive roller coaster in the park is not a big deal. If all goes according to her plans, NASA will send her to Mars in 2033, making her the first human to step foot on the planet. She will spend two to three years living there, growing food, performing science experiments and searching for signs of life. “The Martian is actually very accurate,” she said. “A lot of things that happened in the movie are similar to what is going to happen.” She has devoted her entire life to preparing for her journey.
Her love for space started when she watched a cartoon called The Backyardigans at the age of 3. Five animal pals on imaginary adventures in their backyard, including one part-a mission to Mars. “I thought ‘This red planet is so cool!’” she said. “I started watching videos of rovers’ landing on Mars. I had a large map of Mars in my room which I would look at every day. I started getting telescopes so I could look at space.
At 7, her father took her to space camp in Huntsville, Alabama. “That was the weekend of my life.” she said. I got to learn everything I had been wanting to know and I got to see a life-size rocket.” She cherished the rocket so much that she returned 18 times. At 12, she became the first person in history to attend all three NASA space camps in Huntsville, Alabama; Quebec, Canada and Izmir, Turkey.
At first she mastered the basics of space and how humans have explored it throughout time. As she got older she simulated (模拟) missions, trying to reach a destination in gravity-free, weightless zones.
When she was 9, she met NASA astronaut Sandra Magnus. The experienced explorer told her she was her age when she decided to go to space. At that moment Alyssa knew her love of space was not a hobby. “I did the same thing as other kids, like switching my mind about careers, wanting to be a teacher or the president one day,” she said. “But the way I always thought about it was I would become an astronaut, go to Mars, come back, and then be a teacher or the president.”
1.Which of the following about Alyssa Carson is right?
A.She has created model missions to Mars.
B.She is the youngest one who has completed astronaut training.
C.She is likely to be the first human to perform different tasks on Mars.
D.She has visited the space camp in Huntsville,Alabama for nearly 30 times.
2.What’s supposed to be stressed by referring to NASA astronaut Sandra Magnus?
A.The power of space dreams.
B.The popularity of space travel.
C.The importance of career choices
D.The excitement of her space experiences.
3.What can’t be inferred from the article?
A.The Backyardigans is a cartoon for kids.
B.Alyssa will have many tasks to complete if she lands on Mars successfully.
C.Alyssa was forced to learn the basics of space science by her father.
D.Alyssa enjoys riding roller coasters like many other young people.
4.What does the author intend to do in writing the passage?
A.To introduce American space industry.
B.To promote the values of American teens.
C.To encourage tours to Mars.
D.To present a rising American space star.
高三英语阅读选择中等难度题查看答案及解析
We automatically assume that as adults, we’re wiser than when we were children. However, actually we can learn a lot from our childhood self. For example, we can learn to develop optimism about the future. Do you remember how excited you used to be just before Christmas? 1. Reintroduce that childlike wonder into our daily experiences.
We can learn to dream big and imagine the impossible. How often have you heard a child say something like “One day, I’m going to be an astronaut”? Our adult minds immediately laugh at this idea and think about all the logical reasons as to why this might never happen. 2. We minimize our chances of attaining what we dream about. It is okay to dream big just as our childhood self did.
3. Our childhood self looked at possibilities and believed we could achieve them successfully. If we wanted to build a tree house, we’d go about thinking about how to make it happen instead of focusing on all the reasons it might not happen. In this way we can fill our life with possibilities rather than regrets.
We can learn to be playful and silly sometimes, 4. Children spend a large amount of time escaping from reality to mess about and have fun. Make time for your childhood self to come out and play. Run around the garden, wear a silly hat or spend time laughing. 5..
A.Don’t imagine things could go wrong.
B.We can learn to hold a “can do” attitude.
C.That feeling of great joy is hard to beat.
D.Most children tend to think in a positive way.
E.All of these activities can make us feel happy and alive.
F.We employ self-limiting beliefs without even realizing it.
G.All work and no play makes a person very dull and upset.
高三英语七选五中等难度题查看答案及解析
——In this day and age, women can have children and jobs as well．
——I can’ t agree more． It’s great to have the two ．
A．linked B．related C．connected D．combined
高三英语单项填空中等难度题查看答案及解析
——In this day and age, women can have children and jobs as well.
——I can’t agree more. it’s great to have the two .
A. linked B. related C. connected D. combined
高三英语单项填空中等难度题查看答案及解析
Wallace Chung can sing, dance and act as well. This is ________ he has appealed to his fans for nearly 20 years.
A. why B. because C. that D. how
高三英语单项填空中等难度题查看答案及解析
Why elephants rarely get cancer is a mystery that has confused scientists for decades. A study was led by researchers at Huntsman Cancer Institute (HCI) at the University of Utah and Arizona State University, including researchers from the Ringling Bros. Center for Elephant Conservation may have found the answer. According to the results, elephants have 38 additional modified copies of a gene (基因) that encodes p53, a well-defined tumor (肿瘤) suppressor, as compared to humans, who have only two. Further, elephants may have a more powerful mechanism for killing damaged cells that are at risk for becoming cancerous. In isolated elephant cells, this activity is doubled compared to healthy human cells, and five times that of cells from patients with Li-Fraumeni Syndrome, who have only one working copy of p53 and more than a 90 percent lifetime cancer risk in children and adults. The results suggest extra p53 could explain elephants’ increased resistance to cancer.
“Nature has already figured out how to prevent cancer. It’s up to us to learn how different animals overcome the problem so we can adapt those strategies to prevent cancer in people,” says co-senior author Joshua Schiffman, M.D., pediatric oncologist (肿瘤学家) at Huntsman Cancer Institute, University of Utah School of Medicine, and Primary Children’s Hospital.
According to Schiffman, elephants have long been considered a walking problem. Because they have 100 times as many cells as people, they should be 100 times more likely to have a cell slip into a cancerous state and cause the disease over their long life span of 50 to 70 years. And yet it’s believed that elephants get cancer less often, a theory confirmed in this study. Analysis of a large database of elephant deaths estimates a cancer death rate of less than 5 percent compared to 11 to 25 percent in people.
1.Why do humans often get cancer compared to elephants according to the passage?
A.Elephants are bigger than humans.
B.Elephants have more p53 than humans.
C.Elephants are not as clever as humans.
D.Elephants eat more than humans.
2.Which of the following is right according to the passage?
A.Some damaged cells may be dangerous.
B.Some damaged cells are not dangerous.
C.Some damaged cells can’t be cancerous.
D.Some damaged cells in elephants’ bodies are more dangerous than those in humans’ bodies.
3.What can we know from the last paragraph?
A.Elephants have more cells than people. B.Elephants can get cancer easily.
C.Elephants seldom die from cancer. D.Elephants often die from cancer.
4.Which of the following can be the best title for the passage?
A.Elephants help us B.Learn from Nature
C.How to deal with cancer D.Nature helps us prevent cancer
高三英语阅读选择中等难度题查看答案及解析
Nowadays medical technology seems to be advanced enough for doctors to perform brain transplants (移植). Though this procedure has only been successfully performed on animals so far, doctors are still hoping to perform this procedure on humans. However, in my opinion, brain transplants should not be performed at all, especially not on humans because of the large number of problems and side effects that could come along with. Hopefully these dangerous side effects will convince doctors not to perform this procedure on humans.
Despite many benefits technology brings, I do not think this medical technology of brain transplants will help. We were all born with one brain and through childhood to adolescence our mind developed into who we are, so if with a different brain we would no longer be unique. A person with a different brain would seem to be a total stranger and in many ways they would be. No one should steal our identity from us, even if we are seriously injured, and change it to a completely new one. Also for the people who have died with healthy brains, that was their identity and it should not be given to anyone else.
Another problem with brain transplants is how doctors can choose what are “healthy” or “normal” brains. An elderly person who has died would have an aged brain that would not be as efficient as a younger person’s brain. Then would doctors have to find healthy brains of the same age as the person who needs it? This could also bring up other factors such as intelligence, gender, or physical problems that a person might have had before death. Also another problem might be how long a brain can be kept “alive” after death and how it can be kept “alive” without damage.
Overall, my feelings about this surgery are that it should not be done on humans until doctors have overcome all the problems and obstacles (障碍) that stand in their way of making human brain transplants successful.
1.Why does the author think brain transplants should not be performed at all?
A.The cost of the surgery is extremely high.
B.Doctors are not able to perform brain transplants.
C.A good many problems and side effects may arise.
D.This procedure has only been successful on animals.
2.What is the second paragraph mainly about?
A.People shouldn’t give their healthy brains to others.
B.Having a brain transplant means losing one’s identity.
C.Transplanting brains is changing old brains into new ones.
D.Having brain transplants indicates stealing identity from others.
3.What do we know about “healthy” brains?
A.Aged brains aren’t healthy brains. B.Young brains are always healthy.
C.Healthy brains cannot be kept “alive”. D.It’s very difficult to tell healthy brains.
4.What is the author’s purpose in writing the passage?
A.To encourage brain donation.
B.To stress the importance of brain operation.
C.To argue against brain transplants on humans.
D.To introduce the technology of brain transplants.
高三英语阅读选择中等难度题查看答案及解析
Mountains of smoke and fire
Deep under the Earth’s surface, it’s so hot that even rock melts. Sometimes this molten rock, called “magma”, is pushed up to the surface.1.And the opening or vent that lets the lava out is a volcano.
A volcano may explode violently, throwing out rocks for miles around.2.Some volcanoes release clouds of poisonous gas or huge clouds of ash. Volcanoes can even do all these things underwater.
Most volcanoes have been around for a very long time. Many haven’t erupted for years and have cooled off. Volcanoes that are not going to erupt again are called “dead volcanoes”. Some volcanoes still give off smoke. These “sleeping volcanoes” may “wake up” one day and erupt again. 3. But one day in AD 79 it suddenly woke up. Its eruption threw out hot ash and rocky fragments (碎片) that buried the city of Pompeii. A hot mud-flow buried nearby Herculaneum. Because the remains are so well preserved, the area has been named a World Heritage site.
But not all volcanoes are destructive. When a volcano throws out vast amounts of lava and debris (岩屑), it piles up into a mountain.4.
Other volcanoes help provide heat and energy. Many Icelandic homes get their hot water from springs heated by volcanic steam.5. Plants grow very well in the rich soil left by volcanoes. And valuable gems, such as diamonds, can sometimes be found in the rocks that are thrown out by volcanoes.
A.At this point it is referred to as “lava”.
B.The molten rock is formed inside the Earth.
C.This steam can also be used to produce electricity.
D.Mount Vesuvius in Italy slept for a thousand years.
E.Or it may push lava out so that it flows away, cools and hardens.
F.Japan has many active volcanoes within its narrow national territory.
G.The Hawaiian Islands and the island of Iceland were created in this way.
高三英语七选五困难题查看答案及解析
3D printing is becoming more and more popular. We are now able to create things we need very quickly and easily using 3D printers. But can you imagine printing food?
Some scientists are trying to revolutionize the dining experience by doing this. They hope that having a 3D printer in the kitchen will be as common as the microwave oven or blender.
Scientists say that it’ll be quite easy: you simply have to select a recipe and put the raw food ‘inks’ into the printer. You can also modify the instructions to make the food exactly how you want it. This means that it would be very quick and easy to create tasty and nutritious meals.
Using 3D printers to create your meals would also be saving the environment. There would be less need for traditional growing, transporting and packaging processes as food production would be a lot more efficient. For example, alternative ingredients (原料) such as proteins from algae, beetroot leaves and insects could be converted into tasty products.
Printing food could also help people who suffer from dysphasia (a swallowing disorder). They could program the printer to print softer versions of their favorite foods so that they would not have trouble in swallowing them.
However, some people think that a future of 3D food printing would be a disaster. It could take away many jobs, including those from growing, transporting and packaging food. Imagine a world where there was no need for farming or growing crops and the same tastes could be printed from a raw “food ink”. Likewise, traditional cafes and restaurants might lose business. Also, there are concerns about the nutritional value of printed food: is it really possible to be get the nutrients we need from food-based inks and gels (凝胶)?
What’s more, cooking and eating together with family and friends has long been a traditional and enjoyable activity. It is hard to imagine a world where the pleasure of cooking is dead and meals can be created at the touch of a button.
1.Which of the following best describes 3D food printing?
A.Quick and popular. B.Easy and efficient. C.Nutritious and tasty. D.Soft and convenient.
2.Why do some think that 3D food printing would be a disaster?
A.Traditional food would disappear. B.Many people could lose their jobs.
C.It would affect the people’s health. D.We could all eat the same food.
3.What can we infer from the last paragraph?
A.3D food printing will replace traditional cooking. B.The future of 3D food printing is uncertain.
C.It would hurt our tradition of food culture. D.3D food printing would be a failure.
高三英语阅读选择简单题查看答案及解析
A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components,” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
While this first robotic fly is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically, it should be able to take off, land and fly around,” he said.
Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”
1.Which of the following statements was the difficulty engineers met while making the robotic fly?
A.They did not have sufficient fund.
B.No ready-made components were available.
C.There was no model in their mind.
D.It was hard for them to assemble the components.
2.What do we know about the robotic fly?
A.The robotic fly has been put into wide application.
B.The robotic fly consists of a flight device and a control system.
C.The robotic fly can collect information from many sources.
D.The robotic fly can fly well with the cooperation of individual components.
3.Which of the following can be learned from the passage?
A.The robotic fly can replace animals in some experiments.
B.Animals are not allowed in biological experiments.
C.The robotic fly is designed to learn about insects.
D.There used to be few ways to study how insects fly.
4.Which of the following might be the best title of the passage?
A.The Development of Robotic Fly
B.Robotic Fly Promotes Engineering Science
C.Harvard’s Efforts in Making Robotic Fly
D.Robotic Fly Imitates Real Life Insect
高三英语阅读选择困难题查看答案及解析