Europe’s deadly outbreak of a rare form of E. coli bacteria (大肠杆菌) has brought new attention to food safety issues. One of the problems when people get sick from food is that the simplest question is often difficult or even impossible to answer. Just what did the people eat that made them sick?
Of course, one way to avoid these medical mysteries is to keep dangerous organisms out of the food supply. This is easier said than done, but scientists keep looking for new ways.
Scientists in the United States have developed an experimental system that uses a high-tech optical scanner. The system is designed to identify the presence of contaminants(致污物) like soil or animal waste on fresh produce. These can be sources of E. coli. E. coli bacteria naturally live in the intestines(肠) of humans and many animals. Most kinds of E. coli are harmless but some can make people sick.
The new scanner can also show damage and imperfections that might make the produce unappealing to shoppers.
Scientists designed the system at a Department of Agriculture research center in Beltsville, Maryland. Moon Kim of the Agricultural Research Service led the team.
MOON KIM: “We were requested, we were asked, to develop a method to detect contamination in produce. So we started with the apple as the model sample.”
The scanner uses a high-speed camera placed over the conveyer belt that moves the produce along. As the apples move along the belt, the scanner captures images of each piece of fruit.
Moon Kim says the team hopes the system will be available before long.
MOON KIM: “We are targeting for development in commercial plants for the next several years.”
The scanner can direct a sorting machine to separate the bad apples from the good ones. The system is currently able to show the surface of only half the apple as it speeds by. The inventers hope to improve the process so it can show the whole surface.What is the main topic of the text?
| A.Bacteria. | B.A high-tech scanner. | C.A camera | D.Food safety. |
E. coli bacteria ______.
| A.broke out all over the world | B.comes from soil or animal waste |
| C.is extremely harmful to health | D.does not cause illness |
The high-tech scanner ______.
| A.can help to sort out different fruits |
| B.make the produce appeal to shoppers |
| C.can only capture images of the whole apple |
| D.can identify the presence of contaminants |
What can be inferred from the text?
| A.The scanner needs to be improved. |
| B.The scanner will be available in the next several years. |
| C.Moon Kim is unwilling to develop the scanner. |
| D.The scanner is connected to a sorting machine. |
I was born and raised in the shadow of the Capitol(美国国会大厦), in Washington, D.C., as were my parents and my mother’s parents.
Our row house was on a tree-lined street just blocks from the building that was the heart of the federal legislative branch. When I was a child, in the 1940s, friends and I would pack a lunch or ride a streetcar to the Capitol. If we roller-skated, we hid the skates in the bushes in the park across the street before entering the building.
I knew every corner of the Capitol. We’d play hide-and-seek and pretend we saw ghosts in the halls and stairways. I don’t know how we got away with it. I remember the beautiful ladies’ rooms, with their marble floors and sinks. I pretended that I was a fine lady in them.
In those days, you could walk around the Capitol dome(圆顶屋), which was a little scary for me. I loved the wonderful paintings and statues and the subway rides to the Senate Office Building. It was like an amusement ride. I even used to sit in the gallery of the U.S. House of Representatives—until I became bored with all the talk and went on another adventure.
Whenever I ran up the steps to the huge bronze doors of the Rotunda, I would look back to the world below like a hero. As soon as the doors were opened, the sense of history surrounded me, and I knew it was someplace special.
Those were lucky days, when an American citizen could wander in the Capitol and be a part of history.
Once war was declared, some things changed in the nation’s capital. Because of concerns that Washington might be attacked, as London had been, everyone prepared. Kids at my elementary school wore dog tags, and each of us was fingerprinted.
My father, a pipe worker, became a civil defense warden(民防队员). During an air-raid(空袭), his job was to turn off any leaking gas. Since he always had a cigarette in his mouth, maybe that was not a good choice, but he had a gas mask and flashlight hanging in the rafters of our basement. The mask looked like a monster in the ceiling. My 15-year-old brother was a junior civil defense warden. During air-raid drills, he knocked on doors and asked people to put out their lights. I remember huge searchlights that crisscrossed the skies during the drills, looking for enemy planes.What can we infer from the passage?
A. The writer attended the meeting in House of Representative.
B. The writer’s family lived in Washington D.C. for generations.
C. American citizen, except children, could never enter the Capitol.
D. The writer’s father had a gas mask to prevent him from smoking.When the writer said “I was born and raised in the shadow of the Capitol” (1st paragraph), she most probably meant that ________.
| A.she spent her childhood in an area near the Capitol |
| B.she grew up under the pressure of the Capitol |
| C.the Capitol had some bad influence on my childhood |
| D.she was born and brought up secretly in the Capitol |
By telling the childhood experience, the passage suggests that ________.
| A.London was attacked during the war, as well as Washington |
| B.the writer is a daughter of a member of Representatives |
| C.the writer’s father and brother joined the army during the war |
| D.the Capitol used to be open to the public in history |
What is the writer’s attitude towards the things that changed in the nation’s capital?
| A.neutral | B.positive | C.negative | D.ironic |
A bowl of soup a day could keep the pounds at bay.
Health experts have discovered that adding low-calorie vegetable soup to the start of a meal can actually help to lose weight. Because you tend to feel full sooner, you eat less of your main course.
The soup method was tested by researchers at Pennsylvania State University, led by Dr Barbara Rolls. They found that when participants in the study ate a first course of soup before lunch they reduced their total calorie intake by 20 per cent, compared with those who did not begin the meal with soup. But those who favour creamy soups should beware. Researchers stressed the soup must be low-calorie and based on stock, not cream.
All of the soups tested in the study were made from the same elements—chicken stock (原汁鸡汤), broccoli (菜花), potato, cauliflower (花椰菜) and carrots. They were mixed together to create four different textures and thickness from separate stock and vegetables through to pureed (蔬菜泥) soup.
Scientists thought that thick soups with thick pieces of vegetables which required chewing might be more filling, but to their surprise they found all forms had the same effect. The findings were presented to the Experimental Biology conference in Washington, DC, and the research was part funded by the National Institutes of Health.The passage mainly discusses _____.
| A.how to lose weight in a simple way | B.what kind of soup to be served at a meal |
| C.how to form a healthy eating habit | D.why eating soup could help lose weight |
What does the sentence “A bowl of soup a day could keep the pounds at bay” imply?
| A.Eating soup equals to swimming in a sea. |
| B.Eating a bowl of soup every meal is enough to keep fit. |
| C.Eating soup every day can help you to lose weight. |
| D.Making soup every day could cost you a lot of money. |
Which of following is the possible result of eating soup before a meal?
| A.Dropping the amount of calorie intake. | B.Reducing your weight by 20%. |
| C.Doing good to your growing high. | D.Helping you eat more. |
Which of the following statements is correct in making the soup?
| A.The materials for making soup must be limited to vegetables. |
| B.The soup must be made low- calorie. |
| C.The thickness of the soup makes a difference. |
| D.The soup must be mixed with some cream. |
1. Full Time Secretary Position Available
Applicants should have at least 2 years’ experience and be able to type 60 words a minute. No computer skills required. Apply in person at United Business Dep, 17 Browning Street, Leeds.
2. Part-time Job
We require three part-time shop assistants to work during the evening. No experience required, applicants should be between 18 and 26 years old. Call 0115-765643 for more information.
3. Computer Trained Secretaries
Do you have experience of working with computers? Would you like a full time position working in an exciting new company? If you want to know more about us, call 0457-896754.
4. Teaching Assistants Needed
Hania’s Playschool needs 2 young teaching assistants to help with classes from 9 am to 3 pm. Applicants should have references. For more information please visit www.haniaplayschool.co.uk.
5. Weekend Work Available
We are looking for retired adults who would like to work part time on weekends for Rubberlast Group Ltd. Duties include answering the telephone and giving customers' information. For more information call us at 0113 - 6741326.
6. University Positions Open
The University of Bristol is looking for 4 teaching assistants to help with homework correction. Applicants should have a degree in one of the following: Political Science, English, Economies or History. Please call the University of Bristol for more information.
7. Home Delivery Representative
We are looking for someone who has excellent customer communication skills, a sales background with at least one year's experience and is a good team player with creative ideas. In return we offer a starting salary of 20,000 and 25 days paid holiday per year. For more information please call Direct Delivery Team of Yorkshire Post at 0113- 2388325 or 0113 - 2388318. Which position is most suitable for a retired person?
| A.Part-time Shop Assistant. |
| B.Teaching Assistant at Hania's Playschool. |
| C.Weekend Work in Rubberlast Group Ltd. |
| D.Teaching Assistant in the University of Bristol. |
If you have good computer skills and recently graduated from university(English degree), which jobs can you apply for?
| A.Job 1 and 7. | B.Job 3 and 4. | C.Job 4 and 7. | D.Job 2 and 5. |
Which is the ONLY position that has a formal educational requirement?
| A.Full Time Secretary at United Business Hd. |
| B.Home Delivery Representative for Yorkshire Post. |
| C.Teaching Assistant at Hania's Playschool. |
| D.University Positions at the University of Bristol. |
How can you get more information if you are interested in the position of a full-time computer trained secretary?
| A.By telephone. | B.By letter. | C.By Internet. | D.In person. |
One of India's top engineering schools has restricted Internet access in its boarding houses, saying addiction to surfing, gaming and blogging was affecting students' performance, making them lonely and even suicidal.
Authorities at the best Indian Institute of Technology (IIT) in Mumbai said students had stopped socializing and many were late for morning classes or slept through them. "Now, a student doesn't even know who lives two doors away from him because he is so busy on the Internet," said Prakash Gopalan, dean of student affairs. "The old dormitory culture of companionship and socializing among students is gone. This is not healthy in our opinion."
IIT-Mumbai, with about 5,000 students, is one of seven IITs across India which are considered to be among the finest engineering schools in the world. They are also a talent pool for global technology giants. But their hard courses, tough competition and lonely campus lifestyle have taken an effect on students. Depressive and dysfunctional (不正常的) lifestyles are known to be common among IIT students, and at least nine have committed suicide in the past five years. Students have unlimited free Internet access in their boarding houses to help them in their studies, but many also use it to surf, chat, download movies and music, blog and for gaming.
Starting Monday, Internet access will be banned between 11 p.m. and 12.30 p.m. at IIT-Mumbai's 13 boarding buildings to encourage students to sleep early and to try and force them out of their "shells," Gopalan said. But the move has not gone down well with students who say they hate their lives being regulated. "Now they will say we need to listen to a lullaby (摇篮曲) to go to sleep," said Rajiv, an electronics student.Which of the following is not the possible effect of free Internet access on students?
| A.There has been a decline in students’ lessons. |
| B.Participation in social activities has gone down. |
| C.Some students feel lonely and even suicidal. |
| D.Students don’t even know his classmates. |
What measure has been taken in IIT- Mumbai?
| A.Students have unlimited free Internet access in their dormitories. |
| B.Students are forbidden to surf the Internet. |
| C.Internet access is unavailable in deep night. |
| D.Students must go to bed before 11 p.m. |
In the passage the students are told to _____.
| A.sleep through their lessons | B.break away from the Internet |
| C.go to sleep along with music | D.stop surfing, make friends |
We may infer from the last paragraph that _____.
| A.the banning order causes some complaints among the students |
| B.all electronics students hate the banning order |
| C.more students prefer listening to music to surfing the Internet |
| D.there is no Internet access on the IIT campus even since. |
The Maum Sin Yong School says that they are the first in Colorado and the one of only two schools in the US to teach martial arts (武术) to students with mental diseases.
“They do everything that our regular classes do,” says Rob Hansen, Tae Kwon Do instructor. Hansen teaches the kids how to punch (拳打), kick, and block along with the values of the Korean martial arts. He says that they also learn confidence and how to improve their motor skills. “They’ve learned focus, just to be able to pick one item and pay attention to it.”
“Tae Kwon Do is pretty fun,” says Christina Hinkle. She was born with Down syndrome (唐氏综合症) and says she never wants to miss class. “Well, how come? It’s pretty fun.”
“Ever since she saw Karate Kid, she’s been running around the house, doing kicks and punches,” says Peggy Hinkle, Christina’s mother. Peggy says that her daughter processes information slowly and taking Tae Kwon Do lessons has helped her in all parts of her life. “It gives her a chance to be a regular kid.”
Wednesday’s class is not a normal class. Instead, it’s a day that all the students have been waiting for. “Today is actually the first day, and I’m actually going to be able to test these guys,” says Hansen. The students would receive their White Belts. However, in order to receive their belts, the students must show off their skills in front of a group of Black Belts.
“Nervous? No way. I’m so excited,” says Christina just before she displayed what she has learned over the past few months. She and the other students also answered questions about the history of Tae Kwon Do, as well as its philosophy (哲学).
“To me, it’s just really important for them to actively see that they are learning something,” says Hansen. “That they actually are able to be rewarded for everything that they’ve done in this class.” All the students passed. They received their White Belts.
“To see the joy in her face was very rewarding,” says Peggy. She videotaped the whole test and hugged her daughter telling her that she’s proud. “Christina feels like she could do anything,” she says.
Christina says that her next goal is to keep working on her skills so she can move up to a Gold Belt. She says, “Oh, my God, I can’t believe I got the first rank.” The purpose of teaching the students with mental disease Tae Kwon Do is _______.
| A.to help them gain confidence and be skilled at concentration |
| B.to enable them to punch and kick the other opponents |
| C.to take part in tournament and win prize. |
| D.to get rid of their mental diseases and run motorcar |
Wednesday is the time ________ according to the text.
| A.when the students with mental disease will begin to learn Tae Kwon Do |
| B.when Hansen’s students will give a display of what they have learned. |
| C.when Hansen’s students will replace their black belts with white belts. |
| D.when the parents can see how Hansen teach their children with mental disease. |
The example of Christina in the passage suggests________.
| A.children are learning Tae Kwon Do with their parents’ company. |
| B.Rob Hansen is a strict coach of teaching Tae Kwon Do |
| C.children with mental disease are interested in Tae Kwon Do |
| D.Tae Kwon Do can cure mental disease. |
What can we infer from the passage?
| A.Learning Tae Kwon Do is beneficial to children with mental disease both in health and mind. |
| B.Any child with mental disease should come to learn Tae Kwon Do. |
| C.Parents understand why Rob Hansen teach children with metal disease. |
| D.More schools like The Maum Sin Yong School are needed in America. |