When scientists set out to explore the roots of human laughter, some apes（类人猿） were just tickled（胳肢）to help. That’s how researchers made a variety of apes and some human babies laugh. After analyzing the sounds, they concluded that people and great apes inherited laughter from a shared ancestor that lived more than 10 million years ago. Experts praised the work, it gives strong evidence that ape laughter and human laughter are related through evolution（进化）.
Scientists have noted that apes make characteristic sounds during play or while being tickled, especially to signal that they’re interested in playing. It’s been suggested before that human laughter grew out of primate（灵长类动物） roots. But ape laughter doesn’t sound like human laughter. It may be slower noisy breathing. So what does that have to do with the human ha-ha? To investigate that, Marina Davila Ross and her colleagues carried out a detailed analysis of the sounds made by tickling three human babies and 21 other primates, apes included.
After measuring 11 features in the sound from each species, they tried to find out how these sounds appeared to be related to each other. The result looked like a family tree. Significantly, that tree matched the way the species themselves are related, the scientists reported online in the journal Current Biology. They also concluded that while human laughter sounds much different from ape laughter, their typical features could have come from the same ancestor.
Panksepp, who studies laughter-like responses in animals but didn’t participate in the new work, called the paper exciting. Panksepp’s own work concludes that even rats produce laughter in response to playing and tickling, with sounds that can hardly be heard by people. Robert Provine, a scientist, who wrote the book, Laughter: A Scientific Investigation, said the new paper showed some important clues, like ape sounds that hadn’t been realized before.
69. Why did the scientists analyze the laughter made by tickling human babies and apes?
A. To try to discover if they can make characteristic sounds.
B. To see if they interested in playing.
C. To find out if the laughter of apes and humans is related.
D. To find out the differences between humans and apes.
70. Based on Paragraph 3 we can know that researchers measured the features in the sound to ________.
A. find out ape sounds that hadn’t been realized before
B. find out relations among primates’ laughter
C. see what a family tree from each species looks like
D. make a report online in the journal Current Biology
71. What can be inferred from the last paragraph?
A. Panksepp spoke highly of the new research.
B. Rat laughter is likely to be related to ape laughter.
C. Robert Provine provided some new clues for the researchers.
D. Humans don’t enjoy listening to ape laughter.
72. What would be the best title for the passage?
A. Ape study explores evolution of laughter.
B. Apes like to laugh when being tickled.
C. Human laughter and ape laughter are different.
D. Laughter: A Scientific Investigation.
Winter is dangerous for drivers because it’s so difficult to know what is going to happen and accidents take place easily. Bad weather can be waiting to meet you. Ice might be hiding under the snow, waiting to send you off the road. The car coming towards you might suddenly move across the road. Here are two rules for driving safely on icy roads:
Rule Number One is to drive smoothly. Irregular movements can make a car very difficult to manage. So each time you either turn the wheel, touch the brake or increase your speed, you must be as gentle and slow as possible. Just imagine you are driving with a full cup of hot coffee on the seat next to you. You should drive carefully enough in order that you wouldn’t get the coffee out of the cup.
Rule Number Two is to pay attention to what might happen. The more ice there is, the farther you have to look down the road. Test how long it takes to stop by gently braking. Remember that you may be driving more quickly than you think. Generally speaking, allow double your normal stopping distance when the road is wet, three times this distance on snow, and even more on ice. Try to stay in control of your car at all times, or you will get into trouble.Driving in winter is dangerous because _________.
| A．drivers usually have too much coffee |
| B．people drive three times faster than usual |
| C．unexpected things may often happen |
| D．people drive more gently and slowly |
Rule Number One mainly tells us _________.
| A．to drive fast on snowy roads | B．to increase the driving speed |
| C．to manage your car irregularly | D．to drive smoothly on icy roads |
Why does the writer mention “a full cup of hot coffee” in Paragraph2?
| A．To enjoy the driving with a cup of coffee. |
| B．To explain the importance of careful and smooth driving. |
| C．Because drinks are important for drivers. |
| D．Because he wants drivers to have a rest. |
Which of the following can be the best title of the passage?
| A．Winter Driving | B．Careless Driving |
| C．Traffic Accidents | D．Bad Weather |
Where do you think you might read such a passage?
| A．In dictionaries. | B．In cookbooks. |
| C．In advertisements. | D．In magazines. |
Many people go to school for an education. They learn languages, history, geography, physics, chemistry and mathematics. Others go to school to learn a skill so that they can make a living. School education is very important and useful. Yet no one can learn everything from school. A teacher，no matter how much he knows can not teach his students everything they want to know. The teacher’s job is to show his students how to learn. He teaches them how to read and how to think. So much more is to be learned outside school by the students themselves.
It is always more important to study by oneself than to memorize some facts or a formula(公式). It is actually quite easy to learn a certain fact in history or a formula in maths. But it is very difficult to use a formula in working out a maths problem. Great scientists, such as Einstein，Newton and Galileo didn’t get everything from school. But they were all so successful. They invented so many things for mankind. The reason for their success is that they worked hard all their lives, wasting not a single moment. They would ask many questions as they read and they did thousands of experiments.
Above all, they knew how to use their brains.. The subject which is not spoken of in the article is _____
| A．maths | B．history | C．physiology（生理学） | D．physics |
. The teacher’s job is to teach ___________.
| A．everything the students want to know |
| B．the students everything that they know |
| C．the students some facts of formulas |
| D．the students how to learn |
.Einstein,Newton and Galileo did so many things for mankind because_____.
| A．they learned a lot at school |
| B．they knew how to learn new things outside class by themselves |
| C．they were so useful |
| D．they went to college and learned form professors |
. Who does the article say didn’t waste a single moment?
| A．Great people | B．Persons who work as teachers |
| C．The great scientist－Newton | D．Great scientists |
. From the passage we know that if we want to be successful, we should________ .
| A．Only learn more at school |
| B．needn’t go to school |
| C．Only learn science subjects |
| D．learn to learn at school and learn more outside school |
A beautiful and very successful actress (女演员) was the star for a new musical show. Her home was in the countryside, but she did not want to go back there every night, so she bought an expensive house in the centre of the city, got some beautiful furniture and got a man to paint the rooms in new colours.
It was very difficult to get tickets for her show, because everybody wanted to see it. So she decided to give the painter two of the best seats. She hoped that this would make him work better for her. He took the tickets without saying anything, and she heard no more about them until the end of the month, when she got the painter’s bill (帐单). At the bottom of it were these words: “ Four hours watching Miss Hall sing and dance : 3 pounds,” with this note: “ After 5 p.m. I get 15 shillings (先令) an hour instead of 10 shillings.”The actress bought a house in the centre of the city because _______.
| A．she liked to live in the busiest place. |
| B．she didn’t like to live in the country. |
| C．her home was far away from where she worked. |
| D．she didn’t want to go back to her hometown any longer. |
. In order to make the painter work better for her, the actress ___________.
| A．gave him two tickets for her show |
| B．sang and danced for him for hours |
| C．paid him 3 pounds |
| D．decided to pay him 15 shillings an hour |
. The actress got the painter’s bill ______.
| A．to ask for the money of his painting work. |
| B．to ask her to pay for his watching her show |
| C．in which he showed his thanks for the tickets |
| D．in which he expressed his dissatisfaction |
. It can be learned from the text that one pound is___________ shillings.
| A．10 | B．12 | C．20 | D．15 |
. What kind of man was the painter?
| A．He was a careful man. | B．He was a poor man. |
| C．He was not friendly to others. | D．He knew little about music and dances. |
An African farmer had heard tales about other farmers who had made millions of dollars by discovering diamond mines. These tales so excited the farmer that he could hardly wait to sell his farm and go prospecting for diamonds himself.
So he sold the farm and spent the rest of his life wandering the African continent, searching unsuccessfully for the shining stone that brought such high prices on the markets of the world.
Finally, broke and worn out, he threw himself into a river and drowned.
Meanwhile, back at the farm, the man who had bought his farm happened to be crossing a small river on the property one day when he saw something shining at the bottom of the river. He picked it up. It was a sparkling stone - a good size stone - and, admiring it, he later put it on his fireplace mantel（壁炉架） as an interesting curiosity.
Several weeks later, a visitor admired the stone, looked closely at it, lifted it in his hand and nearly fainted. He asked the farmer if he knew what he'd found. When the farmer said no, that he thought it was just a piece of crystal, the visitor told him he had found one of the largest diamonds ever discovered.
The farmer was astonished. He told the man that his small river was full of these brilliant stones, and his farmland was covered with them. Not all were as large, perhaps, as the one on his mantel, but they were sprinkled generously throughout his property.
Needless to say, the farm the first farmer had sold, so that he could search for a diamond mine, turned out to be the most productive diamond mine on the entire African continent.Why did the first farmer sell his farm?
| A．He had made a fortune by selling diamonds. |
| B．He was tired of his life as a farmer. |
| C．He wanted to make more money elsewhere. |
| D．He was told that there was no diamonds on his farm. |
What happened to him after he sold his property?
| A．He found a river full of diamonds on his farm. |
| B．He lost everything including his own life. |
| C．He discovered a mine filled with brilliant stones. |
| D．He finally got his property back with diamonds. |
When the second farmer first found a shining stone, he ______.
| A．felt sorry for what he had done to the first farmer |
| B．was excited to see he would soon be very rich |
| C．found it special and brought it home |
| D．couldn’t wait to share his joy with his friends |
The visitor nearly passed out after a close look at the stone because _______.
| A．he was shocked by the misfortune of the first farmer |
| B．the discovery was too good to be true |
| C．it was not discovered on his own farm |
| D．he was blinded by the light from the stone |
What do we learn from the story?
| A．Treasure a farm with a river running across it. |
| B．Show your belongings to others to find their real value. |
| C．Dig deep into what we have instead of wandering elsewhere. |
| D．Ask for professional advice before selling anything to others. |
All 20 children who died in a shooting at a school in Connecticut were aged between six and seven,according to an official list of the dead.
The state's chief medical examiner said the gunman used a rifle as his main weapon, and all the victims appeared to have been shot several times.
The gunman, named in media reports as Adam Lanza, killed his mother before driving to the school and opening fire.
Six adults, all women, were also killed before the gunman shot himself dead.
The head teacher at Sandy Hook school in Newtown, Dawn Hochsprung, is listed among the dead, along with adults Rachel DaVino, Anne Marie Murphy, Lauren Russo, Mary Sherlach and Victoria Soto.
Eight boys and 12 girls were killed - all but four of them were aged six.
The youngest, Noah Pozner, celebrated his birthday only last month.
A woman who worked at the school was the only person to be shot and survive.
Scores of people have left flowers at a memorial outside the school, and on Saturday evening hundreds attended a candlelight vigil（守夜）.
President Barack Obama is to visit Newtown on Sunday to meet families and speak at an interfaith vigil at the town's high school.
After the attack, he urged "meaningful action" against gun crime in the US.
"As a country we have been through this too many times," he said in an emotional White House address.How many people of the school got shot during this heartbreaking event?
| A．26. | B．27. | C．20. | D．12 |
Among the student victims, how many are just six years old?
| A．12 | B．20. | C．4. | D．16 |
Very few victims survived the shooting probably because _____.
| A．they were all too young |
| B．they failed to call the police in time |
| C．they each were shot several times |
| D．they were not taken to hospital soon enough |
What did the gunman do after the massive killing?
| A．He shot his mother dead. |
| B．He was caught by the head teacher. |
| C．He killed himself with his gun. |
| D．He got out to attend a candlelight vigil |
From President Barack Obama’s words we can expect that ______.
| A．the control of the use of guns will be tighter in U.S.A |
| B．more gun crimes will be inspired by this attack |
| C．more people will own guns to protect themselves |
| D．fewer people will send their kids to the school |