Sorry to say , our brains naturally start slowing down at the cruelly young age of 30 . It used to be thought that this couldn’t be helped , but new studies show that people of any age can train their brains to work faster . “ Your brain is a learning machine , ” says University of California scientist Dr . Michael Merzenich . Given the right tools , we can train our brains to act like they did when we were younger . All that’s required is the practice designed just for the purpose : a few exercises for the mind .
Merzenich has developed a computer-based training method to speed up the process in which the brain deals with information ( positscience. com ) . Since much of the data we receive comes through speech , the Brain Fitness Program works with language and hearing to better speed and accuracy .
Over the course of training , the program starts asking you to distinguish sounds ( between “ dog ”and “ bog ” , for example ) at an increasingly faster speed . It’s a bit like tennis instructor , says Merzenich , hitting balls at you faster and faster to keep you challenged (受到挑战) . You may start out slow, but before long you’re pretty quick .
The biggest finding in brain research in the last ten years is that the brain at any age is highly plastic. If you ask your brain to learn, it will learn . And it may even speed up while in the process.
To keep you brain young and plastic you can do one of a million new activities that challenge and excite you : playing table tennis or bridge, doing crossword puzzle , learning a language ….“ When it comes to preventing ageing, you really do ‘ use it or lose it ’ , ” says Barbara Sahakian , professor at Cambridge University .
67. Dr . Merzenich’s training method mainly depends on .
A. speech training B. computer languages
C. the activities on joins in D. the information being dealt with
68. By saying “ the brain at any age is highly plastic ”, the writer probably means the brain can be .
A. used B. mastered C. developed D. researched
69. What can we learn from the text?
A. Practice makes a quick mind.
B. Brain research started ten years ago .
C. Dr. Merzenich is a scientist in computer.
D. People believed nothing could stop the brain slowing down.
70. Which of the following agrees with the writer’s idea?
A. The training methods work better for the old.
B. People should use the brain to stop it from ageing.
C. The training of the brain should start at an early age.
D. It’s necessary to take part in as many activities as possible.
We often hear the phrase: "You've a greater chance of being struck by lightning." It is used to describe something that hasn't got much chance of happening. However, the common saying undermines(掩盖) the very real dangers of lightning.
Last Friday, at least 5 people were killed by lightning in Nepal(尼泊尔).
Lightning strikes are the second most common cause of deaths during natural disasters in the US. The first is floods. Around 400 people nationwide are struck by lightning each year, and of those, 73 people die. There are more people killed by lightning than by tornadoes and hurricanes.
Because lightning kills only one or two people at a time, its danger does not receive as much attention as other disasters.
So to raise awareness, the US has made June 22-28 National Lightning Safety Week. It aims to warn the public of the dangers of lightning and provide safety tips during thunderstorms.
"If you hear thunder, you are in danger of lightning," said Rocky Lopes, a disaster educator at the American Red Cross.
"Thunder means that lightning is close enough to hit you at any minute, so you should move indoors immediately and stay there until after the storm has ended. The single most important thing to remember is to seek a hiding place," Lopes said.
Summer is the high time for lightning storms, so when lightning strikes across the sky, remember these safety tips:
Stop working, fishing, swimming or playing in open fields.
If you can count less than ten seconds between a thunder and a lightning flash, take cover inside the nearest building.
Do not stand under a tree.
Get off bicycles or motorcycles.
Crouch down(蹲下)if there is no hiding place.
Avoid open spaces, wire fences, metal objects and electrical objects such as hair driers. The popular opinion about being struck by lightening is that ______.
| A．there’s a greater chance for being killed by lightening than any other natural disaster |
| B．it is the most dangerous among all the natural disasters |
| C．the chance for a person to be struck by lightening is very small |
| D．it is impossible for people to be killed by lightening |
The average death rate of being struck by lightening in US is about _______.
| A．18% | B．50% | C．30% | D．73% |
thunder in the open air______.
| A．just stand by your bicycles and motorcycles |
| B．quickly find a place to go inside |
| C．count ten seconds between a thunder and a lightening |
| D．don’t have a hair drier in your hand |
According to the passage, which of the following is TRUE?
| A．There are more people killed by tornadoes and hurricanes than by lightening in US each year. |
| B．There are on average 5 persons killed by lightening in Nepal each day. |
| C．The death rate of being stuck by lightening is much higher than by other natural disasters. |
D．The National Lightening Safety Week is made to warn the public against the lightening. |
The website FarmersOnly.com calls itself an online dating and friendship finder. The idea started in the mind of a man, Jerry Miller in Ohio. He wondered how farmers could meet new people who understand the life of a farmer. Jerry Miller is not a farmer but he represents a lot of farmers.
As he tells it, the idea for the site was planted when a farmer told him one day that she was recently divorced and would like to date. But someone would invite her to meet for coffee at nine o’clock at night, when she had to start her day at five the next morning.
So, in 2005, Jerry Miller launched his website. “You don’t have to be a farmer to be on FarmersOnly.com, but you do have to have the good old-fashioned traditional values of America’s Heartland.”
You also have to live in the United States or Canada to be a member of the site. Some services are free, but a full membership costs fifty dollars for a year. As of last week the site listed more than 58,000 members. Many of them are farmers in the United States. Others are students or workers involved in some way with agriculture. Jerry Miller tells us about thirty marriages in the last year have resulted from his website.
Some farmers have also found love through a group, Singles in Agriculture, which was formed as a nonprofit organization in 1986. It organizes gatherings that usually end with a dance, but is not a dating service. The purpose is to support educational and social activities that offer people a chance for friendship. Its website, singlesinag.org, says there are more than 1,000 members across the nation and as far away as France. Jerry Miller started singlesinag.org in order to .
| A．help farmers | B．support traditions |
C．un derstand farmers |
D．represent farmers |
What does the underlined sentence in Paragraph 2 indicate?
| A．She dislikes city lifestyle. |
| B．She prefers late night coffee |
| C．Country life isn’t well understood. |
| D．It’s tiring to get up early. |
Which of the following is true of singlesinag.org?
| A．Its services are free. |
| B．It provides dating services. |
| C．Only farmers can become its members. |
| D．Farmers in France can’t benefit from it. |
The author of the text intends to .
| A．advertise for the two websites |
| B．introduce two websites |
| C．encourage social activities |
| D．urge readers to help farmers |
It can be inferred from the text that .
| A．all farmers desire marriage |
| B．farmers are easy to meet new people |
| C．more farmers get divorced in the USA |
| D．the Internet helps improve farmers’ social life |
Parents are often amazed at how fast their child grows and develops. New research has determined that the ability to quantify may develop much sooner than most parents realize.
Kristy vanMarle, professor of the University of Missouri, has determined that contrary to what previous studies have shown, infants（婴儿）are able to quantify substances（物质）—like sand or water—as early as 10 months. As long as the difference between the two substances is large enough, infants will choose the larger amount, especially when it comes to food.
With the assistance of her team researchers, vanMarle tested the quantifying skills of babies by presenting them with two cups: one containing a small amount of food, and one containing a larger amount. Consistently, the babies chose the larger amount.
“Several studies throughout the last 15 years have shown that infants are very good at telling how many objects they see; however, infants don’t seem to count things like water or sand,” vanMarle said. “What we’re saying is that they can quantify substances; it’s just much harder. The infants can see how much food goes into each cup and compare that in their memories. They decide which amount is larger, and they almost always select the larger one.”
This information further refutes（驳斥）the long-held idea that babies “know nothing of the world,” vanMarle said.
“Since psychologists have begun studying infants with sensitive measures, we’ve discovered a lot of early abilities. I think for parents, it should be exciting to know that there’s somebody in there that has some fundamental and basic knowledge of the world, and that knowl
edge is guiding their development,” vanMarle said.
In the future, vanMarle says this kind of study could be linked to a child’s progress in math-related skills, although programs marketed to increase those abilities, such as “Baby Einstein,” still have mixed reviews when it comes to academic study. The quantifying ability refers to the ability to .
| A．choose between different substances |
| B．get much knowledge of the world |
| C．describe the quantity of something |
| D．obtain math-related skills |
What is mainly talked about in Paragraph 4?
| A．The process of doing research. |
| B．The scientific findings. |
| C．The final choice of infants.] |
| D．The observation of infants’ behavior. |
Babies choose the larger amount of food .
A．by saying numbe rs |
B．with the help of parents |
| C．on personal preference | D．through their natural abilities |
We can learn from the text that .
| A．some parents don’t care about their kids |
| B．people used to think the world is known to babies |
| C．little research has been done on infants |
| D．scholars disagree on baby-training programs |
What’s the best title of the text?
| A．Breakthrough in Baby Studies |
| B．Amazing Baby-training Ideas |
| C．Early Human Abilities |
| D．Unique Quantifying Methods |
“Our aim is to take our art to the world and make people understand what it is to move,” said David Belle, the founder of parkour(跑酷).
Do you love running? It is a good exercise, yet many people find it boring. But what if making your morning jog a creative one? Like jumping from walls and over gaps, and ground rolls? Just like the James Bond in the movie Casino Royale? Bond jumps down from a roof to a windowsill and then runs several blocks over obstacles on the way. It is just because of Bond’s wonderful performances that the sport has become popular worldwide.
Yes, that’s parkour, an extreme street sport aimed at moving from one point to another as quickly as possible, getting over all the obstacles in the path using only the abilities of the human body. Parkour is considered an extreme sport. As its participants dash around a city, they may jump over fences, run up walls and even move from rooftop to rooftop.
Parkour can be just as exciting and charming as it sounds, but its participants see parkour much more than that.
Overcoming all the obstacles on the course and in life is part of the philosophy(理念) behind parkour. This is the same as life. You must determine your destination, go straight, jump over all the barriers as if in parkour and never fall back from them in your life, to reach the destination successfully. A parkour lover said, “I love parkour because its philosophy has become my life, my way to do everything.”
Another philosophy we’ve learnt from parkour is freedom. It can be done by anyone, at any time, anywhere in the world. It is a kind of expression of trust in yourself that you earn energy and confidence. Parkour has become popular throughout the world because of .
| A．its founder, David Belle | B．the film, Casino Royale |
| C．its risks and tricks | D．the varieties of participants |
The underlined word “obstacles” in Paragraph 2 is closest in meaning to “”.
| A．streets | B．objects |
| C．barriers | D．roofs |
Which of the following is true of parkour?
| A．It challenges human abilities. | B．It is a good but boring sport. |
| C．It needs special training. | D．It is a team sport. |
As its participants move around a city, .
| A．they can ask for help | B．they may choose to escape |
| C．they should run to extremes | D．they must learn to survive |
Which of the following is the philosophy of parkour?
| A．Sports and extremes. | B．Excitement and popularity. |
| C．Dreams and success. | D．Determination and freedom. |
Public schools in Washington, D.C. provide students with musical instruments for free. When something goes wrong with an instrument, Charles West and Larry Jernigan do the repairs. Both men approach their work with a passion(激情). For them, it’s important that students have a joyful experience with music.
The two have worked together for almost 20 years. This year alone, they’ve fixed about 450 instruments. Both men are musicians and music lovers, so learning to do repairs came naturally.
“I have been a musician all my life.” says West. “I played in an orchestra here in the city. I majored in music in college. I played in an army band.”
Jernigan’s musical interests are varied. “I was formerly trained in the piano and guitar. The alto sax, and the flute, I picked up while working here.”
In addition to fixing instruments, the two also go to schools to instruct teachers and students on how to make minor repairs on their own.
West believes if children start early and stay involved with music, it enriches other areas of their lives. “I see that in other kids. I see it in myself. I have seen it hundreds of times and it works,” he says. “They learn teamwork. They learn patience and respect.
But West has concerns about the future of music in the electronic age.
“This instant age has taken away from the sit-down, the patience. And to learn to play an instrument, it takes patience, it takes diligence, it takes time.”
Being able to enjoy music on the job is one of the benefits of the job. Both men agree their best rewards are the students’ performances. What’s the job of West and Jernigan at school?
| A．Teaching music. |
| B．Writing music. |
| C．Making musical instruments. |
| D．Repairing musical instruments. |
They love the job because they can .
| A．earn more money | B．learn repair skills |
| C．enjoy music | D．watch performances |
Which of the following is true of the two men?
| A．They have fixed 450 instruments in the past 20 years. |
| B．They can play and repair musical instruments. |
| C．Jernigan used to play in an army band. |
| D．West was trained to play the piano. |
According to West, what can people learn from music?
| A．Teamwork and patience. | B．The value of time. |
| C．The truth of society. | D．Diligence and confidence. |
What is mainly talked about in the text?
| A．How to repair musical instruments. |
| B．Learning experiences of two repairmen. |
| C．How to prepare a musical performance. |
| D．The enjoyable job of two music lovers. |