Although the United States covers so much land and the land produces far more food than the present population needs，its people are by now almost entirely an urban society . Less than a tenth of the people are engaged in agriculture and forestry(林业)，and most of the rest live in or around towns，small and large．Here the traditional picture is changing：every small town may still be very like other small towns，and the typical small town may represent a widely accepted view of the country，but most Americans do not live in small towns any more．Half the population now lives in some thirty metropolitan areas(1arge cities with their suburbs、of more than a million people each—a larger proportion than in Germany or England，let alone France)．The statistics(统计)of urban and rural population should be treated with caution because so many people who live in areas classified as rural travel by car to work in a nearby town each day．As the rush to live out of town continues,rural areas within reach of towns are gradually filled with houses，so that it is hard to say at what moment a piece of country becomes a suburb. But more and more the typical American lives in a metropolitan rather than a small town environment．If now America has 250 million people．how many of them are engaged in agriculture and forestry?
| A．About 25 million． | B．More than 25 million． |
| C．Less than 25 million． | D．Less than 225 million |
Which of the following four countries has the smallest proportion of people living in metropolitan areas?
| A．United States． | B．Germany． | C．France． | D．England． |
What’s the meaning of the word “metropolitan” in the middle of the passage?
| A．Of a large city with its suburbs． | B．Of small and large towns． |
| C．Of urban areas． | D．Of rural areas． |
According to the passage，what can we learn about small towns in the United States?
A Most small towns become gradually crowded
B．Small towns are still similar to each other．
C．As the traditional picture is changing，towns are different．
D .Small towns are turning into large citiesWhy is it hard to say when a piece of country becomes a suburb?
| A．Because they are the same． |
| B．Because the rush takes place too quickly |
| C．Because the process is gradual． |
| D．Because more and more Americans live in metropolitan areas． |
Death is natural, but do you have any idea of the process of dying? Modern scientists divide the process of dying into two stages---clinical or temporary death and biological death. Clinical death occurs when the vital organs, such as the heart or lungs, have ceased to function, but have not suffered permanent damage. The organism can still be revived(复活). Biological death occurs when changes in the organism lead to the “breaking up” of vital cells and tissues. Death is then unchangeable and final.
Scientists have been seeking a way to lengthen the period of clinical death so that the organism can remain alive before biological death occurs. The best method developed so far involves cooling of the organism, combined with narcotic（麻醉的) sleep. By slowing down the body’s metabolism(新陈代谢), cooling delays the processes leading to biological death.
To illustrate how this works, scientists performed an experiment on a six-year-old female monkey called Keta. The scientist put Keta to sleep with a narcotic. Then they surrounded her body with ice-bags and began checking her body temperature. When it had dropped to 28 degrees the scientists began draining（流光466） blood from an artery（动脉）. The monkey’s blood pressure decreased and an hour later both the heart and breathing stopped: clinical death set in. For twenty minutes Keta remained in this state. Her temperature dropped to 22 degrees. At this point the scientists pumped blood into an artery in the direction of the heart and started artificial breathing. After two minutes Keta’s heart became active once more. After fifteen minutes, spontaneous(自发的)breathing began, and after four hours Keta opened her eyes and lifted her head. After six hours, when the scientists tried to give her a penicillin injection, Keta seized the syringe（注射器）and ran with it around the room. Her behavior differed little from that of a healthy animal.For a person who suffers from the clinical death ___________.
| A．he still has the possibility of getting back to life |
| B．his most important organs are damaged. |
| C．he can not avoid final death. |
| D．he is still very much alive |
Scientists try to make the time of clinical death longer in order to___________.
| A．slow down the body’s metabolism. |
| B．bring vital cells and tissues back to active life. |
| C．delay the coming of biological death. |
| D．cool the organism. |
How did the scientists put Keta into clinical death?
| A．By surrounding her body with ice-bags and draining her blood. |
| B．By lowing her blood pressure and stopping her heart from beating. |
| C．By draining her blood, lowering her blood pressure and stopping her breathing. |
| D．By putting her to sleep, lowering her temperature and draining her blood. |
All of the following indicate that the monkey has almost restored to her original physical state except the fact that___________.
| A．her heart beat again. |
| B．she regained her normal breath. |
| C．she rejected a penicillin injection. |
| D．she acted as lively as a healthy monkey. |
A store that sells husbands has just opened in Ottawa where a woman may go to choose a husband from many men.
The store consisted of 6 floors and the men increase in positive attributes（品质，特点）as the shopper goes up the flights. There is, however, a catch（陷阱）. As you open the door to any floor you may choose a man from that floor, but if you go up a floor, you cannot go back down except to exit the building.
So a woman goes to the shopping center to find a husband. On the first floor the sign on the door reads: Floor 1— These men have jobs. The woman reads the sign and says to herself, “Well, that’s better than my last boyfriend, but I wonder what’s further up?”
So up she goes. The second floor sign reads: Floor 2 — These men have jobs and love kids. The woman remarks to herself, “That’s great, but I wonder what’s further up?”
And up she goes again. The third floor sign reads: Floor 3 — These men have jobs, love kids and are extremely good-looking. “Hmm, better.”
The fourth floor sign reads: Floor 4 — These men have jobs, love kids, are extremely good-looking and help with the housework. “Wow!” exclaims the woman, “Very tempting. But, there must be more, further up!”
And again she heads up another flight. The fifth floor sign reads: Floor 5 —These men have jobs, love kids, are extremely good-looking, help with the housework and have a strong romantic character. “ Oh, mercy me! But just think…what must be awaiting me further on?”
So up to the sixth floor she goes. The sixth floor sign reads: Floor 6 –You are visitor 3, 456, 789,012 to this floor. There are no men on this floor. Thank you for shopping Husband Mart and have a nice day.Women tend to go up the floor until they reach the top floor because _____.
| A．they think the husbands downstairs are not suitable |
| B．they are sure that the best husbands are on the top floor |
| C．they think even better husbands may be upstairs |
| D．they know the catch very well |
The writer intends us to believe that _____.
| A．husbands are hard to shop |
| B．women are hard to please |
| C．women think they are better than men |
| D．women can’t be too careful when choosing husbands |
We can infer from the passage that _____.
| A．women are not good at shopping husbands |
| B．more women will leave the shop alone |
| C．women are romantic |
| D．women are more kind than men |
While some scientists overlook the existence of a sixth sense for danger, a new research from Washington University in St. Louis has discovered a brain area that clearly acts as an early warning system and helps us adjust our behavior to avoid dangerous situations.
"Our brains are better at picking up not obvious warning signs than we previously thought," said Joshua Brown, a PhD in psychology in the issue of the journal Science.
The findings offer exact scientific evidence for a new way to form a concept of the complex control processes taking place in and around the ACC, a brain area located near the top of the frontal lobes(耳垂) and along the walls that divide the left and right hemispheres(大脑半球).
"In the past, we found activity in the ACC when people had to make a difficult decision, or after they make a mistake," Brown said. "But now we find that this brain area can actually learn to recognize when you might make a mistake, even before a difficult decision has to be made. So the ACC appears to act as an early warning system—— it learns to warn us in advance when our behavior might lead to a negative outcome, so that we can be more careful and avoid making a mistake."
By providing a clearer picture by which we self monitor and control our behavior, the study is an important step in efforts to develop more effective treatments for mental illnesses. It also provides a new way of understanding inappropriate behaviors that often accompany mental illnesses.
"Our results suggest how injury of the ACC can lead to breakdowns in the early warning system, so that the brain fails to stop or control inappropriate behavior ahead of time," said Brown. "On the other hand, in those persons with mental disorder, the ACC might warn us of an upcoming problem even when no problem is in the existence."
Known to be an important part of the brain's control system, the ACC is believed to help adjust between cold, hard, fact-based reasoning and emotional responses, such as love, fear or expectation.According to the passage, the ACC____________.
| A．refers to the sixth sense for danger |
| B．deals with obvious warning situations |
| C．connects the left and right hemispheres |
| D．sends warning messages in advance |
The new research is beneficial because it ________ .
| A．provides a new way of avoiding mistakes |
| B．adjusts emotional responses in time of danger |
| C．helps find better treatments for mental illnesses |
| D．assists people in predicting and avoiding danger |
The new research helps us understand _________.
| A．why we are likely to make mistakes when the ACC is badly injured |
| B．why people with illnesses usually have so many strange behaviors |
| C．how the ACC works when something dangerous happens |
| D．how our brain warns us of failure in advance |
Singles' Day ---- the Chinese opposite of Valentine’s Day has turned into a massive online shopping event. It is a day when single people are supposed to buy themselves presents. But there are sociological reasons behind China's “celebration” of single life. And the imbalance could have big consequences for the country.
There were 34 million more men than women in China in 2011. Part of that is natural – usually there are 105 boys born for every 100 girls. But the Chinese gender ratio (性别比例) at birth is much more obvious. It was 116 boys to 100 girls in 2012. The one child policy is largely to blame. Brought in to limit population expansion, the policy allows only one child per family. But because male children are seen as more valuable, as well as more likely to support their parents in old age, some parents choose to have a son over a daughter. The result is that large numbers of men will likely never get married. In fact, one study has predicted that by 2030, 1 in 5 Chinese men in their 30s will never have married, while another states that 94% of unmarried people in China are men.
Traditionally, China has seen high levels of marriage, usually among the young. Besides, the increased education and career opportunities for women have meant that marriages are happening later. It is also traditional that women often marry men of a higher socioeconomic status than themselves. So women at the top and men at the bottom find themselves alone. One study has even suggested a link between an imbalanced gender ratio and growth in violent crime in the country.
Singles’ Day can’t solve all the problems China’s singles face. Indeed, it is possible that it is causing even more problems, as men resort to increasingly risky lines of work to increase their chances of gaining money and thus a wife. I am worried that as money starts to overcome romance, there is evidence that China ' s marriage market is increasingly materialistic.In 2012, if 50 girls were born, how many boys were probably born?
| A．50. | B．52. | C．58. | D．60. |
What made women in China get married late?
| A．Their support of the government’s late marriage policy. |
| B．Their higher education level and more work chances. |
| C．That they expect to enjoy their single time when young. |
| D．That there are too many excellent young men to choose from. |
What’s the writer’s attitude to the imbalance gender ratio in China?
| A．Optimistic | B．Concerned |
| C．Indifferent | D．Unknown |
We can learn from the passage that .
| A．Singles' Day is celebrated all over the world. |
| B．by 2030, 1 in 5 Chinese women in their 30s will be out of marriage. |
| C．an imbalanced gender ratio is related to the growth in violent crime. |
| D．Singles' Day will solve all the problems China’s singles face. |
The world's first hamburger doesn't come from where you think it comes from. It wasn't invented in the United States, and it didn't originate in Germany. No, the world's first hamburger comes from China.
If you're scratching your head right now, you're not alone. But Chinese hamburgers are very real and they definitely predate the hamburgers we call our own in the U.S. Known as rou jia mo, which translates to "meat burger" or "meat sandwich", they consist of chopped meat inside a pita-like bun, and they've been around since the Qin Dynasty, from about 221 BC to 207 BC. Despite the differences between this Chinese street food and our American-style burgers, the rou jia mo has been called the world's first hamburger.
The rou jia mo originated in the Shanxi Province of China, and is now eaten all over the country. It's typically prepared and eaten on the street. The dough for the bun, or mo, consists of a simple mixture of wheat flour, water and maybe yeast. Of course recipes may vary, but this basic equation makes for a chewy and subtle pillow for the delicious filling. While the mo is traditionally baked in a clay oven, today it's often fried in a pan. They may look a little like Chinese steamed buns or baozi, but the dough for those are, of course, steamed, not baked or fried.
The meat filling might consist of chopped pork, beef, lamb or chicken that has been stewed with a variety of spices, like ginger, cloves, coriander and star anise. You might also find herbs like cilantro or greens like lettuce garnishing the sandwich.What does the underlined word mean?
| A．noodle | B．food | C．bread | D．beverage |
Which of the following is TRUE?
| A．The mo people eat today is baked in a clay oven. |
| B．The world's first hamburger which was originated in the Shanxi Province of China is popular around the world. |
| C．The rou jia mo has a history of more than 2200 years. |
| D．The rou jia mo and American-style burgers share a similar cooking process. |
What would be the best title for the passage?
| A．Delicious hamburger |
| B．How to cook hamburger |
| C．Chinese invented hamburger |
| D．History of hamburger |