Cloning has always been with us and is here to stay. It is a way of making 1. exact copy of another animal or plant. Cloning plants is straightforward while cloning animals is very complicated. The process of cloning is a difficult task 2.(undertake) Many attempts to clone mammals failed. But finally the determination and patience of the scientists paid 3. in 1996 with a breakthrough-the cloning of Dolly the sheep.
At first the fact 4. she seemed to develop normally was very encouraging. Then came the 5.(disturb) news that Dolly had become seriously ill, which made cloning scientists cast down. Meanwhile, Dolly’s appearance raised a storm of 6.(object) and had a great impact on the media and public imagination. 7.(apparent) it became controversial. Although at present human egg cells and embryos 8.(need)for cloning research are hard to obtain, newspapers wrote of evil leaders 9.(hope) to clone themselves to attain their ambitions. Religious leaders also raised moral questions. Some countries reformed their legal systems and 10.(forbid) research into human cloning, but others like China and the UK, continued to accumulate evidence of the abundant medical aid that cloning could provide.
高二英语语法填空中等难度题
Cloning has always been with us and is here to stay. It is a way of making 1. exact copy of another animal or plant. Cloning plants is straightforward while cloning animals is very complicated. The process of cloning is a difficult task 2.(undertake) Many attempts to clone mammals failed. But finally the determination and patience of the scientists paid 3. in 1996 with a breakthrough-the cloning of Dolly the sheep.
At first the fact 4. she seemed to develop normally was very encouraging. Then came the 5.(disturb) news that Dolly had become seriously ill, which made cloning scientists cast down. Meanwhile, Dolly’s appearance raised a storm of 6.(object) and had a great impact on the media and public imagination. 7.(apparent) it became controversial. Although at present human egg cells and embryos 8.(need)for cloning research are hard to obtain, newspapers wrote of evil leaders 9.(hope) to clone themselves to attain their ambitions. Religious leaders also raised moral questions. Some countries reformed their legal systems and 10.(forbid) research into human cloning, but others like China and the UK, continued to accumulate evidence of the abundant medical aid that cloning could provide.
高二英语语法填空中等难度题查看答案及解析
Cloning humans has been _____ in the science world for many years and it is likely to continue .
A. ridiculous B. contemporary
C. controversial D. contradictory
高二英语单项填空中等难度题查看答案及解析
Scientists still wonder whether cloning will help or harm us and where it ____ us.
A.has led | B.is leading | C.had led | D.would lead |
高二英语单项填空简单题查看答案及解析
A planet the size of Jupiter has been discovered and it is one of the hottest ones known to us. This has made scientists think about how planets are formed.
Planets such as Earth have more oxygen than carbon, but what if the composition(组成)is just the opposite? This is a question opened up by a recent discovery of a diamond planet by US and UK scientists. The planet is 1200 light years away from Earth and was observed using NASA's Spitzer Space Telescope. Dr Marek Kukula explained that researchers initially used the Super WASP(Wide Angle Search for Planets) robotic observatories operating continuously, all year around. They detected the planet, then it was observed with the Spitzer Space Telescope, which detected the heat coming from the planet, and from that heat signature they can tell what this planet is made from.
The planet is very different to Earth. "It's giant planet," explains Dr Kukula, "a gas planet, a bit like Jupiter in our solar system. But the interesting thing that they've discovered is that it has a very different composition to the planets in our solar system. This planet has more carbon than oxygen." This suggests that there is more than one way to make a solar system and the range of planets in the universe could be much wider than previously thought.
Dr Kukula says that if there are smaller planets in the same solar system with a similar composition, rich in carbon, their rocks could be rich in minerals such as carbon and diamonds, unlike Earth which has silica(硅石), the sand that rocks on Earth are made from. "This is where this diamond planet idea comes from; they haven't actually detected a diamond planet yet," explains Dr Kukula.it' s hypothetical(假设的), "but you can imagine strange landscapes with black graphite rocks lying around and the surface could be covered with sticky liquids instead of water".
1.What planet has been discovered recently?
A.A planet with more oxygen. B.A planet with more carbon
C.A planet hotter than others. D.A planet bigger than Jupiter.
2.How do scientists decide a planet's composition?
A.By its heat. B.By its size.
C.By telescope. D.By distance.
3.What can we learn about the new planet from paragraph 3?
A.It is in our solar system. B.It looks like Earth.
C.It is completely different from Jupiter. D.It contains a lot of gas.
4.Why do scientists call the planet "a diamond planet"?
A.It is rich in carbon. B.It is rich in silica.
C.It is rich in water. D.It is rich in sticky liquids.
高二英语阅读理解困难题查看答案及解析
Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.
A.that; what | B.whether; where |
C.if; that | D.whether; how |
高二英语单项填空中等难度题查看答案及解析
Sleepiness and boredom lead to yawning (打哈欠), so it has long been believed that the action makes us feel more awake by stretching the muscles surrounding the lungs, or by bringing more oxygen to the blood and the brain. Yet in tests, breathing air with high levels of carbon dioxide or even pure oxygen made no difference to the frequency of yawns.
Another theory, proposed by the French physician Olivier, is that yawning improves the circulation of the fluid (液体) that surrounds the brain. As a result, we can focus better on a task. This might explain why athletes often yawn naturally before they compete.
Recently, though, a new explanation has appeared: Yawning is a way to cool the brain. Experiments led by Gordon Gallup at the University at Albany showed that people yawned far less when their head was cooled by a cold pack compared with holding a heated pack to their forehead The temperature of the brain rises when we are tired, so it is possible that yawning is a way to protect the brain from overheating due to tiredness.
But a strange thing is that when we see another person yawn, we catch it too. In other words, yawning is contagious.
How can we make sense of these different types of yawning? It’s possible that contagious yawning is something different, and might have a social purpose. Steven Palek and his colleagues at the University at Albany say that contagious yawning may be linked to our ability to understand what others want to do. If you are good at reading others’ facial expressions you are more likely to “catch” a yawn. Therefore, lonely people tend to be less affected by yawing, according to research by Atsushi Senju, now at Birkbeck, University of London.
So the simple act of yawning tursout to be surprisingly complex Has this research made you yawn yet?
1.Based on the theory of Olivier, yawning ________.
A.is caused by lack of sleep
B.contributes to concentration
C.is a way to bring more oxygen to the blood
D.increases the circulation of the fluid in lungs
2.The underlined word “contagious” in Paragraph 4 is closest in meaning to _________.
A.Infectious B.Influential
C. Attractive D.Comfortable
3.How is the passage mainly developed?
A.By making comparisons.
B.By listing different figures.
C.By providing explanations.
D.By telling personal experiences.
高二英语阅读理解中等难度题查看答案及解析
It has been said that Lincoln was always ready to join in a laugh at himself. There is one particular story that he always told with great delight.
In his early days as a lawyer, Lincoln went from town to town to hear and judge legal(法律的)cases. During one of these trips, he was sitting in a train when a strange man came up to him. The stranger looked at the tall clumsy(笨拙的)lawyer and said that he had something he believed belonging to Lincoln. Lincoln was a bit puzzled. He had never seen the man before. He didn’t see how a total stranger could have something of his. Lincoln asked how this could be. The stranger pulled out a penknife and began to explain. Many years before, he had been given the pocketknife. He had been told to keep it until he was able to find a man uglier than himself.
Lincoln’s eyes always sparked when he reached this part of the story. The story always brought smiles to the faces of those who heard it. The tale itself was funny. But even more delightful was the fact that a man as great as Lincoln could still laugh at himself.
1.This passage is about .
A.a stranger and his strange knife |
B.Lincoln’s favorite story |
C.meeting stranger in a train |
D.Lincoln’s favorite penknife |
2.From the story we can infer that the stranger in the train ________
A.liked to make friends | B.liked to tell jokes |
C.collected penknives | D.was not handsome |
3.Lincoln was given the pocketknife for ________
A.his appearance | B.a good laugh |
C.being a lawyer | D.being good-humored |
4.Which of the following statements is right?
A.Lincoln, even though great, was not proud. |
B.Lincoln was a great and proud man. |
C.Lincoln lacked self-respect. |
D.Lincoln had a good sense of humor. |
5. What does the word “sparked” in the last paragraph mean?
A.闪耀 | B.暗淡 | C.无神 | D.忧伤 |
高二英语阅读理解简单题查看答案及解析
The office has always been a place to get ahead. Unfortunately, It is also a place where a lot of natural resources start to fall behind. Take a look around next time you’re at work. See how many lights are left on when people leave. See how much paper is being wasted. How much electricity is being used to run computers that are left on. Look at how much water is being wasted in the rest-rooms. And how much solid waste is being thrown out in the rubbish cans. We bet it’s a lot.
Now, here are some simple ways you can produce less waste at work. When you are at the copier, only make the copies you need. Use both sides of the paper when writing something less important. Turn off your lights when you leave. Use a lower watt bulb in your lamp. Drink your coffee or tea out of your mugs instead of single-use cups. Set up a recycling box for cans and one for bottles. And when you’re in the bathroom brushing your teeth or washing your face, don’t let the tap run. Remember, if we use fewer resources today, we’ll save more for tomorrow.
1.The main purpose of the passage is to tell people _______.
A. the disadvantages of working in an office
B. the waste produced in an office
C. to save resources when working in an office
D. how to save water in a restroom
2.From the passage we can infer that in the office ________.
A. using computers is a waste of resource
B. many people don’t turn off the computers after using them
C. computers are to make electricity
D. a computer is not a must for working
3.It is suggested that we use both sides of the paper at the copier because _______.
A. we are short of paper B. the printing is not important
C. we should save paper D. we have to pay for the paper
4.The underlined word mugs is most likely to be _______.
A. a machine that makes coffee
B. a container that can be used again and again
C. a paper product for tea
D. something that can only be found in an office
高二英语阅读理解中等难度题查看答案及解析
A new cinema ____ here. They hope to finish it next month.
A. will be built B. is built
C. has been built D. is being built
高二英语单项填空中等难度题查看答案及解析
Food is life; it gives us the nourishment (营养) we need to stay alive and be healthy.__1.__ Brian Wansink, a professor at the University of Illinois, says we also eat certain foods because they make us feel good, and remind us of happy memories.Wansink calls this kind of food comfort food.For some people, ice cream is a comfort food.For others, a bowl of noodles soup makes them feel good.
2.__ Professor Wansink believes that we connect food with important times, feelings, and people in our lives.“When I was a child, my mother made a delicious soup; I loved it.__3.__ And it helps me feel better,” Says one of Wansink’s coworkers.
Do men and women choose different comfort foods? Wansink’s research at the University of Illinois says “ yes”.In his study, the favorite comfort food for both men and women was ice cream.After this, men usually preferred hot, savory (香的) foods like soup or noodles._4.__ Men and women like to eat comfort foods when they are happy, but women eat these foods more when they are sad or worried.
__5._ About 40 percent of the comfort foods in Wansink’s study were healthy main dishes or soups and vegetables.It shows, says Wansink, that a comfort food can taste good and be good for you.
A.Not all comfort food is junk food.
B.Where can we buy this sort of food?
C.Sweet foods are also their preference.
D.How does a food become comfort food?
E.Usually, we eat because we are hungry or need energy.
F.Women like sweet things such as chocolate and cookies.
G.Now, I often have this kind of food when I am tired or worried.
高二英语其他题中等难度题查看答案及解析