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 more for goods with organic labels (商标). However, if you think paying a little more for organic food gets you a more nutritious 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
2.Smith-Spangler and her colleagues found that __________.
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
3.Which of the following is relatively healthier according to the passage?
A.Organic chicken and pork. B.Organic milk and chicken.
C.Traditional chicken and pork. D.Traditional fruit and vegetables.
4.What is the author’s attitude toward organic food?
A.Sceptical B.Neutral
C.Unconcerned D.Approving
难度: 中等查看答案及解析
Contact CCA’s Special Programs to learn more about our wide range of credit and noncredit opportunities for academic and personal development.
Summer Program
Exceptional 4-week program for students currently completing their study of high school. Earn 3 college credits!
Our setting is CCA’s Oakland campus, where studio-focused, college-level courses help you push beyond concepts to portfolio (作品集)-ready pieces. On-campus Housing & Scholarships available!
Summer courses
CCA offers about 35 for-credit degree courses each summer, scheduled on the San Francisco and Oakland campuses.
Undergraduate and graduate students can work with a visiting artist, develop skills and stay on track for graduation by earning credits ... all while still allowing time to visit family, work, travel, etc.
For information about summer housing, please contact the Office of Residential Life at 510594722 or housing@ cca. edu.
Summer Start
Summer Start is a six-week program designed specifically for international undergraduate and graduate students. This is a for-credit program; students receive six credits towards their degree. During the program, you must live on CCA’s San Francisco campus.
Tuition includes six units of discounted graduate college credit, which will include books, field trip expenses and one-on-one tutoring. Housing fees include six weeks at CCA’s San Francisco Panoramic Residence.
Company-Customized Programs
CCA’s Office of Special Programs can design customized workshops to develop andstrengthen employee skills within your company. Customized programs have included:
* An Ideation Sketching class, for the design team of a national clothing retailer, scheduled Friday afternoons on San Francisco campus.
* Software-specific workshops, for designers from a national paper products and gifts retailer, scheduled in a two-day workshop format during the week on our Oakland campus.
1.Who can apply for Summer Program?
A.Undergraduate students.
B.International students.
C.High school students.
D.College students.
2.What can students do if they take summer courses?
A.Get some credits.
B.Visit famous artists.
C.Make some friends.
D.Go on a field trip.
3.What does Summer Start require students to do?
A.Live on one of the campuses.
B.Pay school fees in advance.
C.Read as many books as possible.
D.Complete the courses on time.
难度: 中等查看答案及解析
When bicycle-sharing company oBike pulled out of Singapore abruptly last year, it left the city with unattended bicycles everywhere. Myanmar businessman Mike Than Tun Win saw the perfect opportunity to turn trash (垃圾) into treasure. “What if these bicycles could be distributed to poor students in villages so they can cycle to school?” he thought.
Mr Than, 33, grew up in Mandalay, where he used to walk to school as a student. While traveling through rural (乡村的) areas in Myanmar over the last few years he saw things had not changed. Long lines of children in rural villages continue to walk 30 minutes to an hour just to get to school. “I thought if we could just reduce the time they take, they could spend more time studying, gain more knowledge and increase their chances of getting out of poverty (贫困),” he said.
With that, he started a movement called Lesswalk with the intention of buying bicycles from bike-sharing firms oBike and ofo-which have stopped operations in Singapore — and shipping them to Yangon. He would renew the bicycles before distributing them to teenagers and families living in rural villages in Myanmar, beginning with villages in Mandalay and Sagaing areas.
Over the last three months, the businessman has bought 10,000 bicycles in Singapore and Malaysia. He paid for 5,000 of the bicycles out of his own pocket, with other sponsors paying for the rest.
Mr Than plans to modify (修改) the bicycles so that they can better suit the needs of the children in villages, most of the time they ride around with their little brothers and sisters. I’m planning to add an extra seat at the back so that they can go to school together,” he said. He also plans to remove the digital locks and give each a new one that works better in villages.
Including the cost of shipping, modification and distribution, Mr Than thinks each bicycle might cost him around US $35 to US $40. “I might have to spend more money, but it is better that these bicycles are going to help some people rather than going to waste,” he said.
1.What's the author’s main purpose of writing the first two paragraphs?
A.To show Myanmar’ s hard rural life.
B.To explain how to turn trash into treasure.
C.To call on more people to follow Mr Than.
D.To state the background of starting Lesswalk.
2.How does Mr Than plan to adapt the bicycles?
A.By painting them in a colorful way.
B.By adding a bright light to each of them.
C.By adding two extra seats to each of them.
D.By changing the digital locks into new ones.
3.What can we infer from Mr Than’s words in the last paragraph?
A.He has a high opinion of himself.
B.He feels regret about what he has done.
C.He is a man with strong social responsibility.
D.He has decided to keep on working with oBike.
4.What's the best title for the text?
A.More unattended bicycles are attracting big attention
B.Bicycle-sharing companies are forced to leave Singapore
C.Rural villages in Myanmar are sponsored out of poverty
D.Businessman donates recycled bicycles to poor students
难度: 中等查看答案及解析
Australia and New Zealand’s health organizations have given their advice on when to use sunscreen (防晒霜), suggesting Australians apply it every day to avoid bad health effects.
A Sunscreen Summit took place in the Australian State of Queensland. During the summit, representatives from some of Australia’s leading research, medical and public health organizations examined the evidence on sunscreen use the determined that in most parts of the country it is beneficial to apply sunscreen every day.
“Up until now, public health organizations have recommended applying sunscreen ahead of planned outdoor activities but haven’t recommended applying it every day as part of a morning routine (惯例),” professor Rachel Neale from QIMR Berghofer Medical Research Institute said. “In recent years, it has become clear that the DNA damage causes skin cancer and melanoma (黑色素瘤), which is caused by repeated small exposure to sunlight over a period of time,” Neale said. “In Australia, we get a lot of sun exposure from everyday activities such as walking to the bus stop or train station,” Neale said.
A study showed that one in two Australians believed it was unhealthy and potentially dangerous to use sunscreen every day. However, Terry Slevin from the Public Health Association of Australia says it is wrong. “There is consistent and compelling evidence that sunscreens are safe,” Slevin said. “Importantly, medical trials have found that people who use sunscreen daily have the same levels of vitamin D as those who don’t,” Slevin added.
Australia has one of the highest rates of skin cancer in the world, which is made worse by the country’s close to Antarctica where there is a hole in the ozone layer (臭氧层), letting in higher numbers of UV rays.
1.What made Australian health organizations advise Australians to use sunscreen?
A.The makers of sunscreen.
B.Australian government.
C.The Sunscreen Summit.
D.New Zealand’s researchers.
2.What is not recommended before the Sunscreen Summit?
A.Using sunscreen as a morning routine.
B.Using sunscreen before outdoor activities.
C.Reducing the use of sunscreen.
D.Reducing outdoor activities.
3.What is the misunderstanding of many Australians?
A.Sunscreen will never take effect.
B.Sunscreen is bad for people’s health.
C.People using sunscreen have the same levels of vitamin.
D.D. People using sunscreen won’t have skin cancer.
4.Which of the following best explains “compelling” underlined in paragraph 4?
A.Interesting. B.Disappointing.
C.Boring. D.Convincing.
难度: 中等查看答案及解析
How Laughing at Yourself Makes You Attractive
Have you ever embarrassed yourself in public and got laughed at for it？1. And it's okay — we should even have a laugh about them.
●Laughing at yourself means accepting who you really are. You may feel bad about yourself because of past misfortune. However, it's normal to be imperfect. What's important is that you should be honest with yourself about who you are. 2. You won’t be able to laugh at yourself without self-acceptance.
●Laughing at yourself helps increase your confidence. When you're able to stay optimistic and laugh at yourself, you are likely to be more successful in life. 3. More importantly, it helps you realize your own weaknesses, so you know which areas to do better in.
●4. Laughing at someone else may hurt their feelings even if you didn't intend to, while laughing at yourself does not. You might even bring a smile to their faces. Don’t worry about losing respect from others, because people actually appreciate it when you laugh at yourself. Laughing at yourself shows that you have the courage to do so and you’re being real about your imperfections, making people think you are likeable.
Just remember that humans all make mistakes. So instead of blaming yourself, try to think of your mistakes, in a positive way and accept yourself just as you are. 5.
A.Laughing at yourself makes you popular.
B.Accept yourself despite your imperfections.
C.You should try to understand yourself better.
D.Chances are that we all have these kinds of experiences.
E.Laughing at yourself changes an ideal image of yourself.
F.Learn to laugh at yourself and you will be more attractive.
G.This is because laughing at yourself helps lift your mood in face of difficulties.
难度: 中等查看答案及解析
A dog waiting on a roadside for four years has finally been reunited with its owner thanks to a social media post. Anuchit Uncharoen happened to be there. He _______ passing by the dog and seeing it being _______ by a woman late in the afternoon.
When he _______ her, he learned that the dog was thought to have been _______. The woman said she_______ took the dog to her home, but the _______ friend escaped and returned to the street, waiting for its _______. Since then, the nice _______ had been regularly bringing food to him and making sure he was _______. Others in the community had been ________, too.
The dog’s heartbreaking situation made the ________ online, eventually reaching his owner. He got in touch with Anuchit and explained that he and his family________ a dog named BonBon four years ago. Their dog had the same ________ as the one in the pictures.
The owner said that BonBon was with them on a trip to a relative. His dog might have ________ out of the car while on the road. He and his family________ for BonBon back in the roads but without luck.
They ________ their pet dog had died and were ________ to discover him alive and well. When the owner paid BonBon a visit, surprisingly, the dog ________ to go with him, even if his tail wagged（摇摆） with ________.
Someone once said, he might only be here for a(n) ________ of your life, but for him, you are his whole life. So remember to be kind to them.
1.A.recalled B.considered C.regretted D.admitted
2.A.attacked B.hugged C.fed D.pushed
3.A.approached B.left C.advised D.remembered
4.A.caught B.abandoned C.accepted D.relieved
5.A.unwillingly B.anxiously C.hopefully D.originally
6.A.fierce B.devoted C.brave D.innocent
7.A.supporter B.visitor C.owner D.reporter
8.A.partner B.passer-by C.reader D.woman
9.A.healthy B.awake C.lucky D.calm
10.A.praising B.helping C.following D.listening
11.A.wishes B.news C.notes D.rounds
12.A.picked B.gained C.lost D.rescued
13.A.appearance B.figure C.character D.size
14.A.looked B.walked C.jumped D.dropped
15.A.prepared B.searched C.reached D.answered
16.A.supposed B.announced C.proved D.doubted
17.A.satisfied B.embarrassed C.confused D.excited
18.A.agreed B.hoped C.refused D.managed
19.A.surprise B.delight C.trouble D.anger
20.A.total B.amount C.part D.sum
难度: 中等查看答案及解析
阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。
Joanna Cole, born on August 11, 1944 in Newark, New Jersey, has been credited to be one of the 1.(popular) children’s authors of all time. She 2.(write) over 250 books so far. Cole has owed a large part of her passion to one of her elementary school teachers.
Joanna Cole continued her education and 3.(final) earned a bachelor’s degree. In 1971, she decided to write her first book cockroaches. She did some research and discovered there had never been a book written for children about cockroaches.4., she thought she would be the first. Cole wrote the first Magic School Bus in 1985. The book would go on to be published the5.(follow) year and quickly became book series and cartoon series due to its 6.(succeed).
Cole writes in a way that will hopefully inspire children 7.(think) like a scientist. She does this by writing ideas instead of just facts. She also tries to ask questions in her books8. require children to think and discover the answers as they read. This creates 9. engaging experience for children, so it is no wonder why younger readers are interested 10.her books.
难度: 中等查看答案及解析
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均限一词；
2. 只允许修改10处，多者（从第11处起）不计分。
My summer holiday is coming soon. Here is some plans for my holiday. First, I want to do my most favourite sport, basketball, to keep healthy. In Grade Three, I was so busy to read books. Next I plan spend more time read to get ready for the life of senior middle school. My parents always take good care for me, so I will help my parents with the houseworks at home. I also hope to visit the Great wall with them. I think it’s the good chance to know more about the history of ours country.
I’m looking forward to my colour holiday.
难度: 中等查看答案及解析
假定你是李华，你有一次不愉快的就餐经历，对餐厅的服务员态度非常不满意。于是你要给餐厅老板写一封投诉信。要点如下：
问题：牛肉面有苍蝇，服务员态度粗鲁。
要求：餐厅赔礼道歉。 提示词：牛肉面：beef noodles
注意：1.词数100左右。
2.可以适当增加细节，使行文流畅。
Dear Sir,
I am Li Hua, a regular customer in your restaurant.
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
难度: 中等查看答案及解析