Ready or not, here they come: Scientists who played hide-and-seek with rats found that their furry subjects seemed to love the game- and they were remarkably good at it.
The researchers taught six adolescent male rats how to play a one-on-one version of hide-and-seek. They equipped a large room with cardboard barriers and small containers to serve as hiding places for humans and rats, respectively. The game started when the rat was placed in a small box in the middle of the room. If the rat was the “seeker,” the scientist would hide and then remotely open the box. If the rat was the “hider the scientist would crouch (蹲伏) by the box when the rat came out. This prompted the little rodent to running quickly for cover. All six rats learned how to be the seeker. Five of them were able to handle hiding as well.
Compared with something like playful wrestling, hide-and-seek is more complex for several reasons. It requires an understanding of the rules, a clear grasp of players’ distinct roles and the ability to assume different roles on different rounds. This unconventional experiment sheds light on the sophisticated sense of play in these tiny rodents, and also hints at the evolutionary usefulness of this type of play.
Peggy Mason, a neurobiologist (神经生物学家) at the University of Chicago, said that she was most impressed by the discovery that the rats didn’t just learn hide and seek—they wanted to play it. Play probably helps young animals learn how to socially interact, Mason said. She pointed to evidence that when rodents are prevented from playing during early development, they don’t grow into normal adults. Instead, they become anxious, they don’t play well with others and they aren’t great parents.
1.What can we know about the experiment?
A.Rats do better than other creatures in hide-and-seek.
B.Rats may enjoy themselves in hide-and-seek.
C.Rats prefer hide-and-seek to other games.
D.Rats may be subject to humans in hide-and-seek.
2.What may drive the rat to hurriedly hide in the experiment?
A.The scientist’s getting close.
B.Potential danger out of the box.
C.Its sense of safety under the cover.
D.Other rats’ call for help.
3.Which of the following best describes hide-and-seek?
A.Unique B.Outdated
C.Easy D.Demanding
4.What may be a possible cause of a poor rat parent?
A.Deep anxiety over their kids’ growth.
B.Unwillingness to get on well with their kids.
C.A lack of confidence in their kids.
D.Absence of play in their early life.
高三英语阅读理解中等难度题
Ready or not, here they come: Scientists who played hide-and-seek with rats found that their furry subjects seemed to love the game- and they were remarkably good at it.
The researchers taught six adolescent male rats how to play a one-on-one version of hide-and-seek. They equipped a large room with cardboard barriers and small containers to serve as hiding places for humans and rats, respectively. The game started when the rat was placed in a small box in the middle of the room. If the rat was the “seeker,” the scientist would hide and then remotely open the box. If the rat was the “hider the scientist would crouch (蹲伏) by the box when the rat came out. This prompted the little rodent to running quickly for cover. All six rats learned how to be the seeker. Five of them were able to handle hiding as well.
Compared with something like playful wrestling, hide-and-seek is more complex for several reasons. It requires an understanding of the rules, a clear grasp of players’ distinct roles and the ability to assume different roles on different rounds. This unconventional experiment sheds light on the sophisticated sense of play in these tiny rodents, and also hints at the evolutionary usefulness of this type of play.
Peggy Mason, a neurobiologist (神经生物学家) at the University of Chicago, said that she was most impressed by the discovery that the rats didn’t just learn hide and seek—they wanted to play it. Play probably helps young animals learn how to socially interact, Mason said. She pointed to evidence that when rodents are prevented from playing during early development, they don’t grow into normal adults. Instead, they become anxious, they don’t play well with others and they aren’t great parents.
1.What can we know about the experiment?
A.Rats do better than other creatures in hide-and-seek.
B.Rats may enjoy themselves in hide-and-seek.
C.Rats prefer hide-and-seek to other games.
D.Rats may be subject to humans in hide-and-seek.
2.What may drive the rat to hurriedly hide in the experiment?
A.The scientist’s getting close.
B.Potential danger out of the box.
C.Its sense of safety under the cover.
D.Other rats’ call for help.
3.Which of the following best describes hide-and-seek?
A.Unique B.Outdated
C.Easy D.Demanding
4.What may be a possible cause of a poor rat parent?
A.Deep anxiety over their kids’ growth.
B.Unwillingness to get on well with their kids.
C.A lack of confidence in their kids.
D.Absence of play in their early life.
高三英语阅读理解中等难度题查看答案及解析
Scientists who discovered a new way of generating electricity from water say they may have come across an alternative source of clean energy to rival wind and solar power.
The breakthrough, which scientists say is the first new way to generate electricity in 160 years, could lead to batteries that use water instead of poisonous substances.
The scientists made the discovery when they were investigating what happens when tap water is forced through extremely narrow glass tubes. Water squeezed down the tubes, each of which was narrower than a tenth the thickness of a human hair, generating a small electric current that ran the length of the tube. To produce a larger electric current, the team tried forcing water through a glass water filter(滤水器)that contained thousands of narrow channels lined up side by side. “When we took a syringe(注射器)of water and squeezed it through the filter, we got enough power to light a light bulb,” said Larry Kostiuk of the University of Alberta in Canada. “The harder you push the syringe, the more electric current you get.”
The current is produced because of an effect in the glass tubes. When they are filled with water, positively charged ions(阳离子)fixed in the tubes are washed away, leaving a slight negative charge on the glass surface. When water is then forced along the tube, the surface repels negatively charged ions in the water while positively charged ions are attracted down the tube. The result is a net flow of positively charged ions that sets up an electric current.
According to Dr Kostiuk, no one has ever thought to use water to produce electricity in this way. “The last time someone came up with a way of generating electricity was Michael Faraday in 1839,” he said. “So this is the first new way of generating electricity in 160 years, which is why we are so excited about it.”
Dr Kostiuk says water batteries might one day be used to power mobile phones and calculators, but admitted that the engineering challenges might make other applications more realistic. “You’d need to be sure it wouldn’t leak, and you’d need to make sure it wouldn’t freeze,” he said.
More likely would be to install the electricity-generating devices where water is already being pumped, such as at city water filtration sites, he said. “It could compete with wind and solar power,” he added.
1.What does the passage mainly want to tell us about?
A. A kind of solar power discovered by scientists.
B. A kind of new energy source found in tap water.
C. The breakthrough to generate electricity 160 yeas ago.
D. A kind of new battery invented without poisonous substances.
2.The underlined word “repels” in Paragraph 4 is closest in meaning to _________.
A. rejects B. identifies C. attracts D. rebels
3.Why were the scientists extremely happy about their new discovery?
A. They were the first to find a new way to produce electricity.
B. They could make an electric current to light a light bulb.
C. Their discovery could be used to invent water batteries.
D. Their discovery was made 160 years earlier than Faraday’s.
4.What can we infer about potential water batteries?
A. They must be used to power mobile phones and calculators.
B. They have some possible disadvantages like water leaking.
C. They would be needed greatly at city water filtration sites.
D. They would be better than wind and solar power.
高三英语阅读理解困难题查看答案及解析
Sometimes people come into your life ．You know that they will help you out who you
are or who you want to become·You never know these people may be，possibly your roommate，neighbor，or even a complete stranger．But when you eyes with them，you know at that very moment they will your life in some way．
And sometimes things happen to you that may seem at first，but in reflection you find that without them you would have never your potential ability．
Everything happens for a ．Nothing happens by chance or good luck．Illness，injury，love all occur to test the of your soul．Without these small tests，life would be like a road to nowhere ．The people affecting your life，and the and failure you experience，help to create who you are and who you become． the bad experiences can be learned from，for they are the most important ones·If someone loves you，love them back unconditionally，because they are you to love．If someone hurts you， them，for they have helped you learn about and the
importance of being cautious．
Make every day ．Appreciate every moment，for you may never be able to 53 it again·Tell yourself you are a great individual and yourself. Create your own life and then go out and live it with absolutely no ． Most importantly，if you LOVE someone，tell him or her，for you never know what tomorrow
may have in store．
1.A. figure B. take C. give D. speak
2.A. where B．how C．who D. what
3.A．fill B．lock C．cover D. close
4.A．value B．affect C．love D．waste
5.A. exciting B. inspiring C. inviting D. challenging
6.A. realized B.lacked C．controlled D. tested
7.A. profit B. fact C. reason D. result
8.A. in need of B. on behalf of C. on account of D. by means of
9.A. degrees B. limits C. influence D. condition
10.A. smooth B. snowy C. busy D. heavy
11.A. sense B. incident C. success D. feeling
12.A. So B. Yet C. Thus D．Even
13.A. probably B. exactly C. certainly D. rarely
14.A. persuading B. allowing C. teaching D. forcing
15.A. warn B. forgive C. scold D. charge
16.A. agreement B. society C. right D. trust
17.A. count B. mean C. go D. change
18.A. save B. experience C. share D. miss
19.A. hold on B. care for C. think of D. believe in
20.A. efforts B. beliefs C. regrets D. directions
高三英语完型填空中等难度题查看答案及解析
Time ______, they'll come here to watch us ______ football.
| A．permitted, playing | B．permitted, to play | C．permitting, play | D．permitting, to play |
高三英语单项填空中等难度题查看答案及解析
Paparazzi, or “paps”, are photographers who take pictures of famous people when they are not at the center of public attention. Paps are different from professional photographers or journalists because they never take ordinary photos.
The goal for paparazzi is to get pictures that no one else will get and then sell the pictures to the buyer who offers the most money — normally a small newspaper, magazine or website.
There is no law against paparazzi taking pictures in public places. However, there are laws that protect certain individuals. For example, child protection laws stop improper pictures of anyone under 16 from being published.
There is also no law that stops paparazzi from following celebrities and taking their pictures either. However, if paps are secretly following them and taking pictures of their faces, they could get into trouble.
Most paparazzi hang out on streets and hot spots for celebrities, waiting for the opportunity to take a picture of a star. Many stay on the streets until the early hours of the morning when celebrities are leaving nightclubs and looking a little worse for wear. However, some have other ways to make sure they get pictures. Many paps are in contact with “informers” who know the locations of celebrities at any given time. They then pass the information on to paparazzi. An informer could be anyone — from a restaurant waiter to a salesman.
Most of the time, paparazzi get a bad reputation for following celebrities. But sometimes stars or their managers will contact paps themselves and tell them exactly where and when they will go. What a love-hate relationship between paparazzi and celebrities!
1.Which of the following things paparazzi might do would be against the law?
A. Getting unsuitable pictures of a 10-year-old actress published.
B. Taking pictures of famous people in public places.
C. Following a famous woman singer secretly and taking her pictures.
D. Hanging out at the places where celebrities often appear.
2.In order to earn big money a pap has to ________.
A. get the only first-hand pictures
B. sell the pictures to a big newspaper
C. make friends with famous people
D. know the locations of celebrities
3.The fifth paragraph mainly tells us ________.
A. how paparazzi get the pictures
B. how dangerous paparazzi’s job is
C. how paparazzi contact informers
D. how much paparazzi pay for the pictures
4.What can we infer from the passage?
A. Paparazzi always take pictures when famous people are tired.
B. Stars hate paparazzi and don’t want to be followed.
C. Paparazzi and famous people rely on each other sometimes.
D. Informers might get paparazzi into trouble.
高三英语阅读理解中等难度题查看答案及解析
— Who should be responsible for the accident?
— The boss, not the workers. They just carry out the order ________.
A. as told B. as are told C. as telling D. as they told
高三英语单项填空中等难度题查看答案及解析
The point is not who said the words, _____ they are true or not.
| A．but whether | B．and whether |
| C．but how | D．and how |
高三英语单项填空简单题查看答案及解析
The key point is not who said the words,______ they are true or not.
| A．but whether | B．and whether | C．but how | D．and how |
高三英语单项填空简单题查看答案及解析
—I__________some photos to be developed (冲洗). Are they ready yet?
—Yes. Here you are.
| A．left | B．will leave | C．have left | D．had left |
高三英语单项填空简单题查看答案及解析
----When can I come for the photos? I need them tomorrow afternoon.
----They________be ready by 12 o’clock.
A．can B．should C． might D．need
高三英语单项填空中等难度题查看答案及解析