题目
题型：不详难度：来源：
More than 8,600 people aged 18 to 60 were asked to play online brain games designed by the researchers to improve their memory, reasoning and other skills for at least 10 minutes a day, three times a week. They were compared to more than 2,700 people who didn"t play any brain games, but spent a similar amount of time surfing the Internet and answering general knowledge questions. All participants were given a sort of I.Q test before and after the experiment.
Researchers said the people who did the brain training didn"t do any better on the test after six weeks than people who had simply been on the Internet. On some sections of the test, the people who surfed the Net scored higher than those playing the games.
"If you"re (playing these games) because they"re fun, that"s absolutely fine," said Adrian Owen, the study"s lead author. "But if you"re expecting (these games) to improve your I.Q., our data suggests this isn"t the case," he said during a press briefing on Tuesday.
One maker of brain games said the company"s games have been proven to boost brain power.
"Their conclusion would be like saying, "I cannot run a mile in under 4 minutes and therefore it is impossible to do so," Aldrich said in a statement.
"There is precious little evidence to suggest the skills used in these games transfer to the real world," said Art Kramer, who was not linked to the study and has no ties to any companies that make brain training games.
Instead of playing brain games, Kramer said people would be better off getting some exercise. He said physical activity can spark(激发) new connections between nerves and produce new brain cells. "Fitness changes the building blocks of the brain"s structure," he said.
小题1:. It can be inferred that the online brain games mentioned in the text are_____________.
| A．costly | B．unreliable | C．illegal | D．effective |
| A．The experiment lasted for a week. |
| B．Age didn’t affect the result of the research. |
| C．Every person played online brain games three times a day. |
| D．People who didn’t play online brain games did better in I.Q test |
| A．Playing games which are fun can improve your I.Q. |
| B．There is a lot of evidence to suggest skills can transfer to the real world. |
| C．Do physical activity can boost your brain power. |
| D．Playing online games can spark new brain cells |
| A．The research was not linked to the study |
| B．Those playing the games can score higher in the test |
| C．playing the games can spark new connections between nerves |
| D．This isn’t the case that these games can improve your I.Q. |
答案
解析
核心考点
试题【In a six-week study, experts found people who played online games designed to im】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
Of course not! You don"t have to suffer needlessly. Your life depends on you, not on any other external(外部的)factor.
I know a woman who says she just accepts what life gives her because she has done everything she can to improve it. Guess what her lifestyle is? She wakes up in the morning, goes to work, comes back home, relaxes, chats with people, watches TV, and then goes to sleep. Next day, the same routine cycle follows.
Huh! Is this what she calls "doing her best"? She believes she has tried her best and just accepts it in her heart that this is the life that has been intended for her and that her luck can only change if God wills it. She hasn"t realized that we have to do our share of making the effort to live the life of our dreams.
Remember that you harvest what you sow. You have to get off the sofa, get your eyes off the TV screen, get your hands off the phone(unless it contributes to your success),and get your mind and body to work! Don"t expect your luck to change, unless you do something about it. If something goes wrong, don"t just regard it as a temporary setback; instead, learn your lesson, make the most of the situation, and do something to solve the problem. It"s not enough to think positively; you also have to act positively.
If someone"s life is in trouble, do you just hope and pray that things will turn out fine? Of course not! You get to do anything you can to save the person. So it is with your own life. It is not enough to hope for the best, but you have to do your best. In other words, don"t just stand(or sit)there, do something to improve your life.
小题1:According to the woman mentioned in Para. 3, her life_________________.
| A．doesn"t need improving | B．couldn"t be improved |
| C．will be better some day | D．will be worse in the future |
| A．Positive | B．Passive | C．Colorful | D．Disturbing |
| A．Your temporary problem is not discouraging. |
| B．Your luck can be changed by your own efforts. |
| C．You can only achieve success when God wills it. |
| D．You should treat yourself in the way you treat friends. |
| A．positive thinking | B．positive action |
| C．hope for the best | D．intention to succeed |
| A．understand yourself | B．improve your life |
| C．believe in yourself | D．change your normal way |
In the international market, goods on sale coming from different countries and suppliers are always facing keen competition. Under such circumstances, they will try everything possible to familiarize themselves with the market conditions. In making investigations, we ought to get information about what similar items the competitors are offering on the market, what prices they are quoting（报价）, what features their products have, who are their regular customers, etc. Then, how can we obtain such information? There are many channels that we can make use of in doing this sort of work. The commercial counselor"s offices of our embassies stationed abroad can help us in making market investigations. Nowadays, our import and export corporations send their trade groups abroad every now and then. One of their purposes is to make market surveys on the spot.
Certainly, face-to-face talks with foreign businessmen are also important channels to get market information. The Chinese Export Commodities Fairs and some other fairs of similar nature as well as visits of foreign businessmen provide us with such opportunities. Of course, there are some other ways of making market investigations.
小题1:In making market investigations, one should ______.
| A．get enough information concerned | B．advertise his products |
| C．produce high quality goods | D．none of the above |
| A．impossible | B．necessary |
| C．advisable | D．available |
| A．The relationship between market investigation and sales promotion is just as that of the lips and teeth. |
| B．It is impossible to succeed in selling a product without market investigation. |
| C．There are various ways of making market investigation. |
| D．Production goes before market investigation. |
| A．to have commercial counsellor" s office of our embassies stationed abroad |
| B．to promote the quality of our own products |
| C．to send trade groups abroad every now and then |
D．to have face-to-face talk s with foreign businessmen |
For these dog lifeguards, the doggie paddle （狗刨式游法）does just fine.
These “lifedogs” tow a buoy(救生衣) that victims can grab, or a raft they can sit on to be towed back to
shore, and unlike their human counterparts(与对方地位相当的人), they can easily jump from helicopters and speeding boats to reach swimmers in trouble.With millions flocking(人群) to Italy’s crowded beaches each summer, the Italian Coast Guard says it rescues about 3,000 people every year — and their dog helpers are credited with saving several lives.
It takes three years for the canines to reach expert rescue status, and currently 300 dogs are fully trained for duty, said Roberto Gasbarri, who co-ordinates the Italian School of Canine Lifeguards program at a centre outside of Rome in the seaside town of Civitavecchia.
“Dogs are useful in containing the physical fatigue（疲劳） of the lifeguard, to increase the speed at which casualties（遇难者） are retrieved（找到并衔回）, to increase the security of both the casualty and of the lifeguard,” Gasbarri said.
The Civitavecchia centre is one of a dozen around the country for the school founded more than 20 years ago in the northern province of Bergamo by Ferruccio Pilenga, whose first trainee was his own Newfoundland.
The school will train any breed（品种）, as long as they weigh at least 30 kilograms, but Labradors, Newfoundlands and golden retrievers are most commonly used because of their natural instinct for swimming. Each dog works in tandem with（同 ……合作） a human lifeguard, who also acts as the animal’s trainer.
小题1:Which of the following can act as the best title fo the passage?
| A．Dogs to the Rescue | B．Dogs Are Good at Doggie Paddle |
| C．The Wonderful Performance of Dogs | D．Dogs: Our Loyal Friends |
| A．Dog can swim very fast | B．Dogs can finish rescue work with ease. |
| C．Dogs can finish the great work free of charge. | D．Dogs can easily be trained |
| A．Any breed can be trained there. |
| B．The ones who have the gift for swimming are welcomed. |
| C．After a better training, the dogs can work alone. |
| D．It is the only place for training dog lifeguards in the school. |
| A．Without the dog lifeguards, 3,000 people would lose their lives every year. |
| B．The buautiful beaches attract millions of people every year. |
| C．Dog lifeguards play an important part in a rescue. |
| D．Italy is a famous place of interest. |
The researchers surveyed and evaluated this by analyzing chlorine isotopes（氯同位素） found in lunar rock samples from Apollo missions. The range of chlorine isotopes in lunar samples was 25 times that found in samples from Earth.
If the Moon had significant levels of hydrogen, as Earth did, this range would have been far less, said Zachary D Sharp, a scientist in the Department of Earth and Planetary Sciences at the University of new Mexico and the study’s lead authour.
The chlorine would have stuck together with hydrogen, forming compounds like hydrogen chloride, and escaped from the Moon’s surface, he said. The abundance of chlorine indicates a lack of hydrogen and water.
“ The amount of water on the Moon was too low for life to possibly have existed there,” he said.
Most scientists believe the Moon was formed when a large object stuck
Earth, breaking off a chunk(a vast piece) that has since orbited Earth. On Earth, goes one theory, water was released as steam form molten basalts(玄武岩) over time, eventually forming bodies of water.
“An understading of whether the Moon was dry or wet will help us understand how water appeared on Earth,” Dr Sharp said.
小题1: A new study indicates that _____ on the moorn.
| A．there is plenty of water | B．water is unlikely to exist |
| C．water existed in the past | D．there is a little water now |
| A．why there is no water on the Moon | B．how the Moon was formed |
| C．when the Earth struck the Moon | D．where the Moon orbited |
A. Zachary D. Sharp, a scientist of New Mexico was in charge of the new study.
B. Chlorine isotopes in lunar samples are 25 time larger than those on the Earth.
C. The more aboundant chloride, the shorter hydrogen and water.
D. The new study is benificial to understand how water appeared on Earth.
小题4: What can we learn from the passage?
| A．There is enough water on the Earth. |
| B．Hydrogen chloride easily escaped from the Moon’s surface. |
| C．The Earth had significant levels of hydrogen. |
| D．Water on the Earth is directly from molten basalts. |
nses of sight, touch, hearing, smell, and taste to survive in the world, find food and mates, lay eggs in an appropriate place, migrate, and avoid hungry predators. Sight
Butterflies have large, compound (multifaceted) eyes, which allow them to see in all directions without turning their heads. Like most insects, butterflies a
re very nearsighted, so they are more attracted to a large stand of flowers rather than individual plants. Butterflies do not "see" colors such as red, green, and yellow, but sense polarized（偏振的） light, which indicates the direction the sun is shining, as well as ultraviolet light, which is present on many flowers and guides butterflies to nectar （花蜜）sources. Smell
Butterflies have a very well-developed sense of smell, but it"s not in their nose (since they don"t have one). Sense receptors located in their antennae, feet, and many other parts of the body help butterflies find food (usually flower nectar), and mates (the female smells the male"s pheromones).
Taste
Butterfly"s feet have sense organs that can taste the sugar in nectar, letting the butterfly know if something is good to eat or not. Some females also taste host plants in order to find appropriate places to lay their eggs. Adult butterflies and moths feed using a probo
scis, a long, coiled tube. Butterflies force blood into the tube to straighten it out, allowing them to feed. Butterflies get all their food from this tube. Hearing
Butterflies don"t have ears. Instead they "hear" sounds through their wings by sensing changes in sound vibrations.
Butterflies may possess senses we don"t even know about yet because their anatomy is very different than ours, and therefore difficult to understand when perceived through our own human senses.
小题1:From the passage we can know that butterflies can see_____
A．thing beh ind them | B．thing in the distance |
| C．most bright colors | D．flower nectar from a distance |
| A．sense organs of sight and smell | B．sense organs of sight and taste |
| C．sense organs of smell and hearing | D．sense organs of smell and taste |
| A．by using their feet | B．by using a tube. |
| C．by using sense receptors | D．by using their wings. |
| A．The food sources of butterflies. | B．The habits of butterflies. |
| C．The unusual body of butterflies. | D．the sense of butterflies. |
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