1 . Is It Worth Buying Organic Food?
Organic food, grown without artificial chemicals, is increasingly popular nowadays. Consumers have been willing to pay up to twice as much for goods with organic labels (标签). However, if you think paying a little more for organic food gets you a more nutritious (有营养的) and safer product, you might want to save your money. A study led by researchers at Stanford University says that organic products aren’t necessarily more nutritious, and they’re no less likely to suffer from disease-causing bacteria, either.
The latest results, published in the Annuals of Internal Medicine, suggest that buyers may be wasting their money. “We did not find strong evidence that organic food is more nutritious or healthier,” says Dr. Crystal Smith-Spangler from Stanford. “So consumers shouldn’t assume that one type of food has a lower risk or is safer.”
For their new study, Smith-Spangler and her colleagues conducted a review of two categories of research, including 17 studies that compared health outcomes between consumers of organic against traditional food products, and 223 studies that analyzed the nutritional content of the foods, including key vitamins, minerals and fats.
While the researchers found little difference in nutritional content, they did find that organic fruit and vegetables were 20% less likely to have chemicals remaining on the surfaces. Neither organic nor traditional foods showed levels of chemicals high enough to go beyond food safety standards. And both organic and traditional meats, such as chicken and pork, were equally likely to be harmed by bacteria at very low rates. The researchers did find that organic milk and chicken contained higher levels of omega-3 fatty acids, a healthy fat also found in fish that can reduce the risk of heart disease. However, these nutritional differences were too small, and the researchers were unwilling to make much of them until further studies confirm the trends.
Organic food is produced with fewer chemicals and more natural-growing practices, but that doesn’t always translate into a more nutritious or healthier product. The U.S. Department of Agriculture (USDA) states that “Whether you buy organic or not, finding the freshest foods available may have the biggest effect on taste.” Fresh food is at least as good as anything marketed as organic.
1. The new research questions whether organic food ________.| A．should replace traditional food |
| B．has been overpriced by farmers |
| C．is grown with less harmful chemicals |
| D．is really more nutritious and healthier |
| A．organic food could reduce the risk of heart disease |
| B．traditional food was grown with more natural methods |
| C．both organic and traditional food they examined were safe |
| D．there was not a presence of any forms of bacteria in organic food |
| A．Organic chicken and pork. |
| B．Organic milk and chicken. |
| C．Traditional chicken and pork. |
| D．Traditional fruit and vegetables. |
| A．Doubtful. | B．Positive. | C．Unconcerned. | D．Approving. |
2 . One of my wonderful memories is about a Christmas gift. Unlike other gifts, it came without wrap (包装).
On September 11th, 1958, Mum gave birth to Richard. After she brought him home from hospital, she put him in my lap, saying, “I promised you a gift, and here it is.” What an honour! I turned four a month earlier and none of my friends had such a baby doll of their own. I played with it day and night. I sang to it. I told it stories. I told it over and over how much I loved it!
One morning, however, I found its bed empty. My doll was gone! I cried for it.Mum wept and told me that the poor little thing had been sent to a hospital. It had a fever. For several days, I heard Mum and Dad whispering such words as “hopeless”, “pitiful”, and “dying”, which sounded ominous.
Christmas was coming. “Don’t expect any presents this year,” Dad said, pointing at the socks I hung in the living room.“If your baby brother lives, that’ll be Christmas enough.” As he spoke, his eyes filled with tears. I’d never seen him cry before.
The phone rang early on Christmas morning. Dad jumped out of bed to answer it. From my bedroom I heard him say, “What? He’s all right?” He hung up and shouted upstairs. “The hospital said we can bring Richard home!”
“Thank God!” I heard Mum cry.
From the upstairs window, I watched my parents rush out to the car. I had never seen them so happy. And I was also full of joy. What a wonderful day! My baby doll would be home. I ran downstairs. My socks still hung there flat. But I knew they were not empty; they were filled with love!
1. What happened to the author on September 11th, 1958?| A．He got a baby brother. |
| B．He got a Christmas gift. |
| C．He became four years old. |
| D．He received a doll. |
| A．Impossible. | B．Boring. |
| C．Difficult. | D．Fearful. |
| A．Excitement. | B．Happiness. |
| C．Sadness. | D．Disappointment. |
| A．A sad Christmas day. |
| B．Life with a lovely baby. |
| C．A special Christmas gift. |
| D．Memories of a happy family. |
6 . Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.
But while it’s long been believed that endorphins (内啡肽) —chemicals in the body that cause happiness—are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.
According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.
To test this theory, the scientists turned to mice. Both mice and humans release high levels of endorphins and endocannabinoids after exercise. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety. But after being given a drug to block their endorphins, the mice’s behavior didn’t seem to change. However, when their endocannabinoids were blocked with a different drug, their runners’ high symptoms seemed to fade.
“The long-held notion of endorphins being responsible for the runner’s high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.
Similar studies are yet to be carried out on humans, but it’s already known that exercise is a highly effective way to get rid of stress or anxiety. The UK’s National Health Service even prescribes (开药 方) exercise to patients who are suffering from depression. “Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can improve your mood if you have depression, and its especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.
It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is to put on our running shoes.
1. What did scientists from German universities recently discover?| A．Working out is a highly effective way to treat depression. |
| B．The runner’s high could be caused by endocannabinoids. |
| C．Endorphins may contribute to one’s high spirits after running. |
| D．The level of endorphins and endocannabinoids could affect one’s mood. |
| A．To find what reduces the runner’s high symptoms. |
| B．To see the specific symptoms of the runner’s high. |
| C．To identify what is responsible for the runner’s high. |
| D．To test what influences the level of endocannabinoids released. |
| A．Effect. | B．Goal. | C．Opinion. | D．Question |
| A．They can help ease depression symptoms. |
| B．They are the best way to treat depression. |
| C．They only work for those with serious depression. |
| D．They can help people completely recover from depression. |
7 . You probably know who Marie Curie was, but you may not have heard of Rachel Carson. Of the outstanding ladies listed below, who do you think was the most important woman of the past 100 years?
Jane Addams (1860-1935)
Anyone who has ever been helped by a social worker has Jane Addams to thank. Addams helped the poor and worked for peace. She encouraged a sense of community (社区) by creating shelters and promoting education and services for people in need. In 1931, Addams became the first American woman to win the Nobel Peace Prize.
Rachel Carson (1907-1964)
If it weren’t for Rachel Carson, the environmental movement might not exist today. Her popular 1962 book Silent Spring raised awareness of the dangers of pollution and the harmful effects of chemicals on humans and on the world’s lakes and oceans.
Sandra Day O’Connor (1930-present)
When Sandra Day O’Connor finished third in her class at Stanford Law School, in 1952, she could not find work at a law firm because she was a woman. She became an Arizona state senator (参议员) and, in 1981, the first woman to join the Supreme Court of the United States. O’Connor gave the deciding vote in many important cases during her 25 years on the top court.
Rosa Parks (1913-2005)
On December 1, 1955, in Montgomery, Alabama, Rosa Parks would not give up her seat on a bus to a passenger. Her simple act landed Parks in prison. But it also set off the Montgomery bus boycott (抵制). It lasted for more than a year, and kicked off the civil rights movement. “The only tired I was, was tired of giving in,” said Parks.
1. What is Jane Addams noted for in history?| A．Her social work. | B．Her teaching skills. |
| C．Her efforts to win a prize. | D．Her community background. |
| A．Her lack of proper training in law. |
| B．Her little work experience in court. |
| C．The discrimination against women. |
| D．The poor financial conditions. |
| A．They are highly educated. | B．They are truly creative. |
| C．They are pioneers. | D．They are peace-lovers. |
8 . Dance Classes
Ballet
Ballet teaches grace, posture (姿势) and flexibility. Students focus on the use of proper ballet items (物品), expanding their knowledge of classical ballet techniques and improving motor skills for classical ballet practice. The class is a formal ballet class.
Age: 8 — 10
Date: September 7, 2019 — May 16, 2020
Time: 10:30 am — 12:00 am on Saturdays
Creative Movers
Students can explore creative movement, balance, focus, the development of skills, motor planning and balance. The class helps build strength, flexibility and self-confidence, and allows children to realize expression in a positive and encouraging environment. Children use their imagination to celebrate movement and have lots of fun.
Age: 3 — 5
Date: September 7, 2019 — January 18, 2020
Time: 9:00 am — 9:45 am on Saturdays
Jazz
Jazz includes movements from both classical ballet and dance techniques. This class will focus on traditional Jazz dance. Students will be introduced to jazz-style rhythms and movements. In order to ensure proper placement for your child, we invite all students to participate in a sample (示例) class. Students and parents work with program staff to meet students’ personal dance goals.
Age: 5 — 6
Date: September 7, 2019 — May 16, 2020
Time: 2:00 pm — 3:00 pm on Saturdays
Hip Hop
Students will be introduced to several different aspects of hip hop dance including Popping, Locking, Breaking and Tutting in a high-energy environment. Our hip hop instructors are highly knowledgeable and will provide students with a wonderful view of hip hop dance.
Age: 7 — 10
Date: September 7, 2019 — May 16, 2020
Time: 1:00 pm — 2:00 pm on Sundays
1. Which class is suitable for 4-year-old children?| A．Ballet. | B．Creative Movers. | C．Hip Hop. | D．Jazz. |
| A．Make use of all the ballet items. | B．Learn the long history of jazz. |
| C．Dance with famous modern jazz dancers. | D．Get to know jazz-style movements. |
| A．It is open in the afternoon. | B．It is available on Sunday. |
| C．It teaches traditional dances. | D．It has the most skilled teachers. |
| A．when | B．that | C．which | D．where |
