Has anyone ever told you that eating carrots will help you see in the dark?This is just one of many incorrect beliefs you may have heard. Below, TEENS has picked out scientific explanations for three mistakes that people make about their eyes. Let’s take a look.
Can eating carrots improve your eyesight?
Carrots are rich in vitamin A, which helps the eyes to turn light into information for your brain. This allows people to see in darker places.However, eating more carrots won’t help you see better. A certain minimum amount will help, but a large number of carrots will not give you superhuman vision.
If your parents have bad eyesight, will you have bad eyesight, too?
Myopia(近视)can be passed from parents to children. A study by the American Optometric Association found that if both parents are myopic, there’s a 33 to 60 percent chance that their child will be. For children who have one parent with myopia, the chance is 23 to 40 percent, and it’s down to 6 to 15 percent for kids with non-myopic parents. So if your eyesight is bad, your children might still have good vision.
Do color blind people see the world in black and white?
Color blindness doesn’t usually mean that people see the world like an old movie. They usually can’t tell certain colors apart, especially green and red. Another commonly confused pair of colors is yellow and blue.Our eyes have cone cells(视锥细胞)that sense different wavelengths (波长)of light. If these cells don’t work properly, color blindness occurs.
There are different levels of color blindness. Some people are only color blind in low light.
However, in the most serious form of color blindness, everything is shades of gray.
1. Which can help the eyes to turn light into information for the brain?| A．vitamin A | B．vitamin B | C．vitamin C | D．vitamin D |
| A．stops the brain from seeing |
| B．doesn’t help you see better at all |
| C．will give you superhuman vision. |
| D．is good for your eyes to some degree |
| A．40-67% | B．33-60% | C．23-40% | D．6-15% |
| A．Watching movies for too long. |
| B．Getting too little exercise. |
| C．Cone cells not working properly. |
| D．Changes in the wavelength of light. |
| A．To offer some advice on protecting your eyes. |
| B．To clear up some misunderstandings about our eyes. |
| C．To provide help for improving your vision. |
| D．To explain how bad eyesight and color blindness form. |
相似题推荐
【推荐1】Teeth are very important for our health. They will be our good friends. So we should learn to protect (保护) them at a very young age. Here are some tips:
First, we should eat right.
* Don’t eat too much candy or drink too much cola, or our teeth will go bad easily.
* Have more cheese and milk to make teeth strong.
* Eat more vegetables and fruits to help clean teeth.
Second, we should remember these numbers in mind.
* 2/Day Brush our teeth at least twice a day: in the morning and before bedtime.
* 2-3 Minutes Brush our teeth at least two to three minutes every time.
* 3 Months Get a new toothbrush every three months.
* 6 Months Go to the dentist every six months for a check-up.
根据短文内容，判断下列各句正(T)误(F)。1. We should learn to protect our teeth at a very young age.
2. Milk and cheese can keep our teeth strong.
3. We shouldn’t brush our teeth after dinner.
4. We can brush our teeth for only one minute each time.
5. At least two toothbrushes should be used in a year.
Eyesight plays a very important role in our daily life. Every walking moment, the eyes are working to see the world around us. Over forty percent of Americans worry about losing eyesight, but it’s easy to include steps into our daily life to ensure healthy eyes. Here are five suggestions for a lifetime of healthy eyesight.
Schedule yearly exams
Protect against UV rays
Long-term stay in the sun creates risk to your eyes. No matter what the season is, it’s extremely important to wear sunglasses.
Give your eyes a break
Two-thirds of Americans spend up to seven hours a day using computers or other digital products.
As part of a healthy diet, eat more fruit and vegetables each day. Vitamins C and E help protect eyesight and promote eye health.
Practice safe wear and care of contact lenses
Many Americans use contact lenses to improve their eyesight. While some follow the medical guidance for wearing contact lenses, many are breaking the rules and putting their eyesight at risk.
| A．Eat your greens. |
| B．Eye care should begin early in life. |
| C．They can properly protect your eyes. |
| D．Stay in good shape by taking more vitamins. |
| E．Parents usually don’t care about their own eyesight. |
| F．Always follow the doctor’s advice for suitable wear. |
| G．This frequent eye activity increases the risk for eye tiredness. |
We see many things like colors, lights, buildings with our eyes.
Let eyes have a good rest
Many people need to look at a computer when they work or study. That puts a lot of pressure (压力) on their eyes. So every 20 minutes,
There are some bad rays (光线) from the sun. They can be bad for eyes, so it’s best to get in the habit of protecting them from an early age. Wearing a sun hat or sunglasses is the best way to protect your eyes.
Have eye-friendly food
You can also protect your eyes by eating some eye-friendly food.
Have a good sleep
Make sure you have a good sleep at night. You may think you aren’t doing anything when you’re sleeping. But it’s the time for your body to rebuild and repair (重建和修复). At night,
| A．Green vegetables and fish are good to keep our eyes healthy |
| B．But can you protect your eyes well |
| C．Close your eyes for a longer time if possible |
| D．Wear a sun hat or sunglasses |
| E．Stay at home in the daytime |
| F．you should let your eyes have a good rest |
| G．your eyes keep cleaning out the bad things |
Like other kinds of grass，a bamboo plant may be cut very low to the ground，but it will grow back very quickly．A Japanese scientist reported one bamboo plant which grew 1.5 meters in 24 hours ! Bamboo grows almost everywhere in the world except Europe．There are more than 1，000 kinds of bamboo．
Not all bamboo looks the same．Some bamboo plants are very thin．They may only grow to be a few centimeters wide while others may grow to more than 3 0 centimeters across．This plant also comes in different colors，from yellow to black to green．
Bamboo has been used to make things such as hats and kitchen tools．Because it is strong， bamboo is also used to build buildings．
Many Asian countries have used bamboo for hundreds of years．They often use bamboo for buildings and supporting new buildings and bridges while they are being built．
In Africa ,poor farmers are taught how to find water using bamboo．These African countries need cheap way to find water because they have no money ,and their fields often die from no rain and no water．Bamboo pipes(管子)help poor farmers bring water to their fields without spending a lot of money．
1. How is bamboo like grass?
| A．It grows quickly． | B．It’s wood． |
| C．It is easy to cut． | D．It is very thin． |
| A．in China | B．in Europe |
| C．on mountains | D．in Africa |
| A．make money | B．be trees |
| C．grow quickly | D．carry water |
【推荐2】Did you watch your dog bury（埋）his favorite bone but dig it up only a day or two later? There is actually a reason behind this—it’s simply in their nature. For thousands of years, dogs have buried their bones.
When dogs lived in the wild, sometimes food was hard to find. If they were able to find meat and bones, dogs had to protect them. In order to keep other dogs and animals from finding their meat, dogs would bury it in the ground. Even though most dogs have lots of food to eat today, their instincts（本能）still tell them to bury their bones. Some dogs hide（藏）more than one bone at a time.
A dog cannot bury a bone just anywhere. He must first find the perfect place. Often it’s near a tree or a large rock. Once the dog finds the perfect place, he uses his front feet to dig the hole, drops the bone and covers up the hole to protect it. Dogs don’t always remember where a bone is buried, but they have a wonderful sense of smell. A dog can smell a bone even if it has been buried for years. Most of the time, dogs find bones they have buried by themselves, but they can also find bones buried by other dogs.
1. Why did dogs in the wild bury their bones?| A．To protect their families. |
| B．To protect their food. |
| C．To have a little fun. |
| D．To make the bones grow up. |
| A．He digs a hole. |
| B．He drops the bone in a hole. |
| C．He finds the perfect place. |
| D．He covers up the hole. |
| A．Dogs started burying bones 100 years ago. |
| B．Dogs do not bury bones to protect them now. |
| C．Dogs always bury the bones near a river. |
| D．Dogs may hide more than one bone once. |
| A．Dogs’ parents lived in the wild. |
| B．Dogs’ instincts can help them. |
| C．Dogs’ wonderful sense of smell. |
| D．Dogs’ habit of burying bones. |
【推荐3】In order to host the Olympics, a city must submit a proposal to the IOC. After all proposals have been submitted, the IOC votes. If no city with the fewest votes is eliminated, the voting continues, until a majority winner is determined. Typically the Games are awarded several years in advance, allowing the winning city time to prepare for the Games.
In selecting the site of the Olympic Games, the IOC considers a number of factors, and chiefly among them is which organizing committee seems most likely to stage the Games effectively. The IOC also considers which parts of the world have not yet hosted the Games. For instance, Tokyo, the host of the 1964 Summer Games, and Beijing, that of the 2008 Games, were chosen in part to popularize the Olympic movement in Asia. Because of growing importance television worldwide, the IOC in recent years has also taken into account the host city’s time zone. Whenever the Games take place in the USA or Canada, for example, American television networks are willing to pay specially higher amounts for television rights because they can broadcast popular events live in the best viewing hours.
Once the Games have been awarded, it is the duty of the local organizing committee—not the IOC or the NOC of the host city’s country to provide them with money. This is often done with a part of the Olympic television revenues, and corporate sponsorships, tickets sales, and other smaller revenue sources. In many cases there is also direct government support.
Although many cities have achieved amounts of money by hosting the Games, the Olympics can be financially risky. When the financial gains from the Games were less than expected, the city was left with large debts.
1. During voting, the city ________ will win host of Olympics.| A．getting most votes in the first vote | B．getting more than half votes |
| C．being supported by a major city | D．going around successfully |
| A．the time zone of the host city | B．the existing facilities of the host city |
| C．whether the area has hosted the Games | D．whether profit could be made by the host city |
| A．it’s a major city of Japan | B．it’s a famous city |
| C．it’s a city in Asia | D．it’s nice and cool in summer |
| A．the local government and the financial organizations |
| B．the local government and the organizing committee |
| C．the IOC and the National Olympic Committee |
| D．the local companies and the local media |
【推荐1】Forget about “military-style (军事型) travel” during which people want to visit as many places as possible by using the least time. A kind of more relaxing travel way named “Citywalk” is becoming popular in China. It is about traveling around a city on foot. Such walks usually avoid famous places of interest and shopping centers. They take you to places where you can know the people’s lives well, help you eat at small but great restaurants and let you better learn about the history and culture of the city.
Nancy and her husband Dave moved from Beijing to Shanghai some days ago. They found new jobs there. Nancy is an art teacher and Dave is a doctor now. They got to know about Citywalk online. Then they chose a popular Citywalk route (路线) in Shanghai. They not only enjoyed the beauty of the streets, but also visited some small shops. ______
Citywalk not only gives young people a way to learn about a city but also gives them a new scene, where people who share the same interests and ideas can easily make friends.
Some places, such as Beijing and Shandong, have made Citywalk part of their plans to help with their cultural tourism. Shanghai has planned Citywalk routes using bus routes to help visitors reach more far places.
Many people say Citywalk is a good way to have a talk with the city they live in. Zhang Zhi, a travel guide from Beijing, said tourists now like personal travel services better. He thinks Citywalk makes travelers better choose the trips they want according to their interests and needs, so it’s sure to be more popular among travelers in the near future.
1. What does the underlined word “They” in Paragraph 1 refer to?| A．People. | B．Good restaurants. |
| C．Such Citywalks. | D．Shop centers. |
| A．They loved this trip a lot. | B．They never took such a trip. |
| C．They hated to join this trip. | D．They planned to give up this trip. |
| A．Paragraph 2. | B．Paragraph 3. | C．Paragraph 4. | D．Paragraph 5. |
①Nancy a. a travel guide.
②Dave b. a doctor.
③Zhang Zhi c. an art teacher.
| A．①-b, ②-a, ③-c | B．①-c, ②-a, ③-b |
| C．①-c, ②-b, ③-a | D．①-a, ②-b, ③-c |
| A．He feels worried about it. | B．He isn’t sure about it. |
| C．He doesn’t care about it. | D．He is hopeful about it. |
【推荐2】Chinese has a long history. It has shaped other languages in Asia the way Latin has shaped languages in the West. With this history, will Chinese have a surprising future?
Over one billion people speak Chinese in the world—far more than any other language. It is the language of the country which is soon to have the world’s largest economy (经济). Chinese people are found studying and doing business all over the world.
In fact, Chinese is definitely going to be a world language. Why is this certain? We must look at the economic and political power (政治影响力) of China, which is increasing every day. In the past, world languages have always been the languages of countries with powerful economics. Latin, French and English were important because of the power of the countries that spoke those languages.
Foreign interest in Chinese has developed very quickly together with the development of the Chinese economy. Chinese has become one of the most important and popular languages to learn.
As China develops, more and more people will want to learn about Chinese language and culture, to work and study in China, and to do business with Chinese companies. Chinese will one day become an international language.
1. In which way is Chinese similar to Latin?| A．They both have influenced other languages. | B．Both languages have over one billion speakers. |
| C．They both have a long history and bright future. | D．Both languages are spoken only by Chinese. |
| A．Always. | B．Certainly. | C．Never. | D．Possibly. |
| A．The more important language is, the stronger economy is. |
| B．The stronger economy is, the less important language is. |
| C．The weaker economy is, the more important language is. |
| D．The stronger economy is, the more important language is. |
【推荐3】On Women’s Day, a magazine listed several famous women who have helped change the world. Here are four of them.
 Dorothy Hodgkin(1910-1994) Dorothy Hodgkin was a scientist. Her work at studying penicillin（青霉素）and vitamin B12 helped improve health care around the world. It brought her the 1964 Nobel Prize for Chemistry. At the same time, Hodgkin spent a large amount of time on peace movement. |
 Audrey Hepburn (1929-1993) Audrey Hepburn was a British actress and she was quite popular during the 1950s and 1960s. She was voted（投票）as one of the most beautiful women of the twentieth century. In 1988, she began a new career and worked for UNICEF to help children in need. |
 J.K. Rowling (1965-) J.K. Rowling is a well-known British novelist who is best known for the Harry Potter series. It’s believed that her books have made reading become much more popular among British children. She wrote the first Harry Potter book as a single mother, trying to make some money to support her life. Finally, her writing led to her great success. |
 Tegla Loroupe (1973-) As a sportswoman, Loroupe from Kenya held the women’s marathon world record and won many marathons. Since she stopped running, Loroupe has worked to promote（促进）peace, education and women’s rights. In Kenya, Loroupe is widely praised for her efforts to end tribal conflict（部落冲突）. |
A． | B． | C． | D． |
| A．Hodgkin won the Nobel Peace Prize in 1964. |
| B．Hepburn was popular because she was the most beautiful actress. |
| C．British children like reading more because of Rowling’s books. |
| D．Loroupe continued her education after she stopped running. |
| A．They are peace lovers. | B．They come from Britain. |
| C．They are Nobel Prize winners. | D．They were born in the 20th century. |
【推荐1】There are fifty states in the United States. The largest in population is California， the largest in area is Alaska. Alaska is the smallest in population and Rhode Island is the smallest in size. The oldest states are the ones along the Atlantic coast. The newest states are Alaska and Hawaii. Alaska is also the coldest state. California and Florida are the warmer. Henry and his family live in Seattle， a big city， on the Pacific coast. But Los Angeles and San Francisco， also on the Pacific coast， are larger than Seattle. Henry's cousin， Susan， lives in New York. It is the largest city in the United States. Thousands of people visit New York each year. The most important city in the United States is Washington， D. C. It is the capital， but it is much smaller than New York.
1. How many states are there in the U. S. A . ?| A．Five | B．Forty- Five. | C．Fifty | D．Fifteen. |
| A．California. | B．Rhode-Island. |
| C．Alaska | D．Los Angeles. |
| A．Rhode Island. | B．Seattle. |
| C．San Francisco. | D．Alaska. |
| A．The oldest states are the ones along the Pacific coast. |
| B．Washington is the most important and the largest city. |
| C．New York is the largest city in the United States. |
| D．Henry's cousin lives in the Seattle. |
Because _________.
| A．it is the largest city |
| B．it is the largest in population |
| C．it is the most beautiful city |
| D．it is the capital of the United States |
Thank you for your e-mail. I’m glad you like your school. I go to school from Monday to Friday. We have four classes in the morning and two in the afternoon. We have many things to do after class. On Monday and Thursday afternoon we play sports. On Tuesday afternoon some of us have an art lesson. It’s fun. And on Wednesday afternoon some students have a handcraft (手工) lesson. It’s fun. I like it. I want to make a model plane this week. On Friday afternoon we practice English. My Chinese friends like to talk (说话) with me in English. They think I am like an English teacher. Isn’t it great? On Saturdays and Sundays I don’t go to school. I always go to the park and have a good time with my family there.
Yours,
Tracy
1. Tracy has ________ classes every day.
| A．four | B．five | C．six | D．seven |
| A．play sports | B．have an art lesson |
| C．have a handcraft lesson | D．practice English |
| A．练习 | B．休息 | C．观看 | D．收听 |
| A．friends | B．family | C．cousins | D．classmates |
| A．Tracy goes to school six days a week. | B．Tracy comes from China. |
| C．Tracy plays sports on Friday afternoon. | D．Tracy likes the handcraft class. |
| Lecture(演讲) on Interview Skills May 11,2018 6:00 pm--7:00 pm The meeting room in Building No. 11, Purdue University Learn what to do and what not to do in a job interview |
| Family Day 2018 May 30,2018 8: 00 am--6: 00 pm There will be delicious food, family-friendly activities and musical performances To attend Family Day 2018, please fill in the online form on our website. |
| Open Mic (麦克风) Night May 30,2018 7:30 pm-9:30 pm Students of Purdue University with any talent will sing songs, play instruments, perform magic and so on. To take part in the activity, please send an email to jason @ msn. com. |
| Japanese Conversation Tables Wednesdays May to June, 2018 6:00 pm-7:00 pm The meeting room in Building No. 5, Purdue University Japanese Conversation Table provides a fun chance to practice speaking and listening skills with native(土生土长的) Japanese speakers. Volunteers: If you are a native Japanese speaker, love talking about where you are from and want to work with people who really want to learn the language, please send an email to mutibe@ purdue. edu. Tables are led by at least two volunteers each time. |
根据材料内容选择最佳答案。
1. What can you learn about in Building No. 11?
| A．How to make delicious food | B．Musical performances. |
| C．Interview skills | D．How to speak Japanese well. |
| A．go to Building No, 5 |
| B．fill in a form online |
| C．send an email tojason@msn.com |
| D．send an email to mutibe@ purdue. Edu |
| A．singing songs | B．swimming |
| C．performing magic | D．playing instruments |
| A．find a job | B．set the table |
| C．go to Purdue University | D．practice speaking Japanese |
| A．The students at Purdue University |
| B．The buildings at Purdue University |
| C．The activities at Purdue University. |
| D．The jobs offered by Purdue University. |
