Bigger-brained birds survive better than their feathered friends with smaller brains, according to a study published on Tuesday.
Scientists have suspected that birds with large brains in relation to their body size lived longer because they were able to adapt their behavior to environmental challenges.
Now they have provided evidence that it does.
“We have tested the hypothesis(假设) that the brain can buffer(缓冲) animals against the environment and help them to survive when they face environmental challenges,” said Daniel Sol of the Centre for Ecological Research and Forestry Applications in Barcelona, Spain.
After comparing death rates, brain size and body mass of 236 species of birds from different regions of the world, Sol and scientists in Britain, Hungary and Canada discovered that the bigger the brain the better. Crows and parrots have the largest brains, while pheasants (野鸡) have a relatively small brain.
Earlier studies have shown there is a relationship between the size of the brain and an animal’s capacity to create new behavior and adapt more easily.
“The idea is that if you have a big brain, you are more capable of adjusting behavior and responding to environmental changes. This can help you to survive,” said Sol, who reported the finding in the journal Proceedings of the Royal Society B: Biological Sciences.
Tamas Szekely of the University of Bath in England and a co-author of the report, said birds were ideal to test the hypothesis because they are the only species in which brain size and behavioral response to environmental challenges such as climate and habitat destruction is understood.The finding of bird’s brains recently refers to ________.
| A．the smaller brain the birds have, the longer they live |
| B．the smaller brain the birds have, the cleverer they are |
| C．the bigger brain the birds have, the larger their bodies are |
| D．the bigger brain the birds have, the abler they are to deal with environment |
Scientists from ________ countries have made the discovery.
| A．two | B．three | C．four | D．five |
According to the text we can know that the report of the finding was written by________.
| A．Daniel Sol |
| B．Tamas Szekely |
| C．Daniel Sol and Tamas Szekely |
| D．someone whose name was not mentioned |
Which of the following statements is true?
| A．Pheasants have the smallest brains of all birds. |
| B．Crows and parrots have the largest brains in all animals. |
| C．A pig’s brain is bigger than a cock, so it must be cleverer than the cock. |
| D．The discovery is now only certain about and mainly limited to birds. |
The necktie looks set to follow the top hat in being handed over to the fashion museum by office workers within the next 50 years, according to research.
Nearly three quarters (74%) think the tie will not survive within British firms beyond the next half a century with the popularity of the open-collared shirt. Its demise is being blamed on the boom in creative businesses, such as Facebook and Google, and online trading companies where formal dress codes tend to be avoided in favour of a more casual approach.
Once considered an important part of business dress, the tie has become a victim of the spread of "casual Fridays" into other weekdays, according to researchers.
The poll, by Deal Jungle. com, which helps small and medium enterprises, found more than half (51% ) thought the tie would die out in offices within the next 20 years and almost a quarter (22%) believed it would last less than 10 years.
A spokesman for the site, which has 20, 000 registered members, said: "Ties have been around seemingly forever but increasing numbers of office workers are telling them to get away."
"The success of businesses such as Facebook and Google, where even the CEO turns up wearing jeans and a hoodie, also seems to have had a corrosive (侵蚀性) effect on the idea of dressing formally for work."
"Many of our members keep their expenses to a minimum by working from home so they feel no need to dress up to go to work. We know that when they meet with clients, they still put on a business suit, but a tie is no longer seen as an essential part of the suited-and-booted look."
"Instead, many businessmen and increasing numbers of executives choose a suit and shirt with an open collar. The tie-less suit creates an impression of a more approachable deal maker, someone who is still business-minded, yet creative and technology-sensible, too. "Why are ties expected to disappear in offices?
| A．CEOs in creative businesses set a rule to forbid wearing ties. |
| B．The idea of casual weekdays is increasingly accepted. |
| C．Office workers are tired of wearing ties daily. |
| D．The tie-less look appears more modern. |
According to the spokesman, how are their members dressed before clients?
| A．Business suits and casual jeans. |
| B．Formal suits and a shirt with a tie. |
| C．Casual suits and buttoned-up shirt. |
| D．Business suits and an open-collared shirt. |
What kind of image does the tie-less suit create?
| A．Accessible in business. | B．Professional in fashion. |
| C．Casual in working. | D．Creative in dressing. |
What does the underlined word "demise" mean in Para.2?
| A．popularity | B．survival | C．disappearance | D．development |
Each spring brings a new wildflower blooming in the fields along the highway I travel daily to work.
There is one particular blue flower that has always caught my eye. I've noticed that it blooms only in the morning hours. The afternoon sun is too warm for it. Every day each year for about two weeks, I see those beautiful flowers.
This spring, I started a wildflower garden in my yard. I can look out of the kitchen window while doing the dishes and see the flowers. I've often thought that those lovely blue flowers from the fields would look great in that bed alongside other wildflowers.
Every day I drove past the flowers, thinking, "I'll stop on my way home and dig them." "Gee, I don't want to get my good clothes dirty…" Whatever the reason, I never stopped to dig them. My husband even gave me a tool one year for that expressed purpose.
One day on my way home from work, I was saddened to see that the highway department had cleared up the fields and the pretty blue flowers were gone. I thought to myself, "Way to go, you waited too long. You should have done it when you first saw them blooming this spring. "
A week ago we were shocked and saddened to learn that my oldest sister-in-law has a cancer. She is 20 years older than my husband and unfortunately, because of age and distance, we haven't been as close as we all would have liked.
I couldn't help but see the connection between the pretty blue flowers and the relationship between my husband's sister and us. I do believe that God has given us some time left to plant some wonderful memories that will bloom every year for us.
And yes, if I see the blue flowers again, I'm sure I'll stop and transplant them to my wildflower garden.How long might the blue flower bloom in spring?
| A．About two weeks. | B．The whole season. |
| C．About one week. | D．The whole day. |
Where did the writer want to transplant the flowers?
| A．Across the fields. | B．Along the highway. |
| C．In the garden. | D．Outside the yard. |
Which of the following is NOT true about the writer's sister-in-law?
| A．She is seriously ill. |
| B．She is twenty years old. |
| C．She lives far away from the writer. |
| D．She is not in close touch with the writer. |
What does the writer want to tell us?
| A．Value now and don't lose chances. |
| B．Visit our relatives only after they get ill. |
| C．Refresh our wonderful moments every year. |
| D．Plant flowers and don't enjoy them in the field. |
[1]One out of many important things for the whole family to do is to have dinner together. Researchers began reporting the benefits of family dinner about a decade ago, focusing mainly on how it affects children. Studies show that those families who eat dinner at least 3 or 4 times a week together, benefit in many ways.
[2]Eating together helps families achieve open communication and build stronger and healthier relationships. Children have better grades at school and are better adjusted as teens and adults, and the entire family enjoys healthier nutrition. For many families, eating dinner together proves to be good and effective way to reduce the risk of youth rates of addiction, and helps to raise healthier children. It is also a great time to share the events of the day, discuss news and ideas and just be together and enjoy each other's company.
[3]During dinner time parents have better opportunity to show that the prior to their children. Sitting at the same table and sharing meals is where and when parents can find out more about their children's school performance, daily activities and attitudes toward life. When parents have all this information they can better direct their kids toward positive things in life. They also have better chance to reduce the possibility that children will get involved with alcohol, tobacco, and illegal drugs.
[4]However, family researchers say that the benefits of family dinner by no means can be considered as automatic. Parents can sit down to dinner with their kids every day and achieve nothing. _________ if there is too much arguing going on, if there is no meaningful conversation or, what is even worse, if there is just plain silence during gathering. What is the main idea of the text? (no more than 8 words)
________________________________________________________________What is the author’s attitude to family dinner?（no more than 2 words）
_________________________________________________________________Fill in the blank in Paragraph 4 with proper words. (no more than 8 words)
_________________________________________________________________What information can parents probably get about their children at family dinner? (no more than 12 words)
_________________________________________________________________What does the word underlined in Para. 3 refer to.(No more than 2 words)?
________________________________________________________________
Why are people interested in eating raw foods or whole foods? One reason is that eating these types of food reduces the risk of acid accumulation in your body.
Raw and whole foods are usually digested more efficiently than cooked and refined foods. When we cook foods, we destroy the natural enzymes (酶) that are part of the food in its raw form. These enzymes were intended by nature to help us digest the food. When we consume food without these natural enzymes, our bodies either digest the food improperly or allow too many nutrients to be absorbed into the bloodstream. In both instances, the result is obesity. When too many nutrients are absorbed at once, the body grows fat. Improperly digested food moves slowly through the digestive tract, where it becomes increasingly acidic. To protect its vital organs from this acidic waste, the body changes the acid into fat and stores it safely away from the organs.
Processed foods contain chemical elements, which might confuse the appetite mechanism that tells us when we’ve had enough to eat; as a result, people often overeat. Processed foods also upset the digestive cycle. The body will either identify these foods as allergens and then store them safely away from the organs as fat, or the remains of undigested food will become acidic and enter the bloodstream as acid waste, which will stick to the blood vessel walls and block the passage of vital oxygen and nutrients heading for the body’s cells. The body’s metabolism (新陈代谢) becomes inactive, and the result is weight gain and obesity.
The accumulation of acid in the digestive tract makes digestion increasingly inefficient. When that happens, even healthy foods can become acidic and the food allergies will become more common.
To stop this vicious（恶性的） circle in its tracks, people need to consume food and supplements that will neutralize the acid already accumulated in body. Eating the right types of raw and whole foods can help. It’s also important to restore your enzyme balance. You need to identify and avoid the foods that cause acid accumulation and consume the foods that increase enzyme production. If you truly want to change and help your body heal itself, you need to take an active approach.It can be inferred from Para. 2 that __________.
| A．foods with natural enzymes help people keep fit |
| B．we’d better be cautious about raw and whole foods |
| C．it is essential for people to protect their vital organs |
| D．giving up cooked and refined foods is a new lifestyle |
Processed foods are unhealthy because they __________.
| A．destroy body’s cells | B．may lead to obesity |
| C．are difficult to digest | D．stop body’s metabolism |
What is the main purpose of this passage?
| A．To warn people of the problem of obesity. |
| B．To advocate eating more raw and whole foods. |
| C．To inform people of the harm of processed foods. |
| D．To tell the differences between raw and processed foods. |
What is likely to be talked about following the last paragraph?
| A．Different causes of acid accumulation. |
| B．Correct ways to cook raw foods. |
| C．Suitable types of raw and whole foods. |
| D．Active approaches to avoid acid. |
What can we learn from the text?
| A．Processed foods are good for our appetite mechanism. |
| B．Processed foods also comfort the digestive tract. |
| C．T he accumulation of acid in the digestive tract makes digestion more effective. |
| D．Eating the right types of raw and whole foods does good to our body. |
Researchers at the University of Bedforshire have developed a new technique for powering electronic device（装置）. The system, developed by Professor Ben Allen at the Centre for Wireless Research, uses radio（无线电） waves as power.
Believed to be a world first, the team claims it could eventually eliminate (or get rid of )the need for conventional batteries. The university has now filed a patent application to secure the only rights to the technique.
Professor Allen and his team have created a system to use medium wave frequencies to replace batteries in small everyday devices like clocks and remote controls.
The new technique uses the “waste” energy of radio waves and has been developed as part of the university’s research into “power harvesting”. Professor Allen said that as radio waves have energy―like light waves, sound waves or wind waves―then, in theory, these waves could be used to create power.
“The emerging（新兴的）area of power harvesting technology promises to reduce our reliance on conventional batteries,” he said. “It’s really exciting way of taking power from sources other than what we would normally think of.”
The team is now waiting for the results of the patent application to secure recognition of the technique. Professor Allen said that the team’s achievements had all been done in their “spare time”. “Our next stage is to try and raise some real funds so that we can take this work forward and make a working prototype（模型）and maybe partner up with the right people and take this to a full product in due course,” he said.
“Power harvesting has a really important part in our future, because, just in this country, we dispose of somewhere between 20,000 and 30,000 tonnes of batteries in landfill（垃圾填理）sites every single year－that is toxic chemicals going into the ground.”
He added that development of the product could also be “commercially beneficial”. “The market for this is several billion pounds. We’ve seen market predictions for 2020 which have these kinds of figures, so there’s a lot of commercial potential in this area,” he said.
Pro-Vice Chancellor at the University of Bedfordshire, Professor Carsten Maple, said, “This type of work is a reflection of the university’s growing reputation and experience in conducting innovative（创新的）research.”From the text we know the new technique for powering electronic devices_____.
| A．can be applied to all electronic devices. |
| B．uses radio waves to create power. |
| C．has replaced conventional batteries. |
| D．produces many toxic chemicals. |
According to Professor Allen, power harvesting technology______.
| A．makes every use of radio waves. |
| B．takes power from usual sources. |
| C．reduces our dependency on conventional batteries. |
| D．aims at huge commercial benefits. |
What can we learn about Professor Allen and his team from the text?
| A．They have made use of radio waves in their daily life. |
| B．They have raised a big fund to support their research. |
| C．They have gained a patent for their new technology. |
| D．They mainly did their research in their spare time. |
What is Professor Carsten Maple’s attitude toward the new technique?
| A．Critical. | B．Favorable. | C．Conservative. | D．Negative. |
What is the text mainly about?
| A．A new technique to create power. |
| B．A crisis concerning conventional batteries. |
| C．Some special sources of power. |
| D．The development of power harvesting. |
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