We all know that if we want to keep our body in good shape we have to do physical exercise regularly as well as be careful with what we eat. What we tend to forget is that this goes for our eyes as well. Medical science confirms that a diet rich in carotenoids (类胡萝卜素) can help maintain good vision(维持好视力) and prevent against a number of eye diseases. Here's some advice about how to choose the right diet to keep your eyes healthy.
— Eat orange food. Fruits and vegetables with orange flesh are rich in carotenoids. In addition to carrots，oranges，pumpkins and sweet potatoes are also available. All of these contain high levels of carotenoids，which help to maintain good vision.
— Include dark green vegetables，such as spinach (菠菜) and broccoli (西兰花) in your diet, to act as natural sunglasses. Recent scientific studies have shown that these vegetables can help block (阻挡) the damaging UV radiation(紫外线辐射)from the sun's rays.
— Prevent some eye diseases with orange juice, yellow corn, whole milk, nuts and leafy vegetables. These foods are good sources of vitamins A, C, D and E. All of these are necessary to good eye health.
— Increase your intake of omega3 with some sea fish, and some other seafood. Omega3 helps build cell walls and is especially beneficial to keeping eyes healthy .It also helps regulate the eye's internal pressure and helps the eye dry up excess fluid.We can learn from the first paragraph that healthy food .
| A．keeps eyes healthy |
| B．means you don't need exercise |
| C．can help cure eye diseases efficiently(有效地) |
| D．means people don't have to wear glasses |
Why should people eat orange food according to the text？
| A．It is beneficial to building cell walls in eyes. |
| B．It is more delicious than other food. |
| C．It is good for eyesight. |
| D．It is rich in various vitamins. |
Which of the following can help block the damaging UV radiation from the sun's rays？
| A．Pumpkins. | B．Juice. | C．Nuts. | D．Broccoli. |
The purpose of the text is to tell people how to .
| A．keep their body in good shape |
| B．choose a healthy diet for their eyes |
| C．prevent serious eye diseases |
| D．get natural sunglasses from food |
Sure, human dads can play games with their kids and help with homework, but can they give birth? Daddy sea horses can! This Father’s Day, while you’re praising your daddy, you may also remember that some of the best dads in the world can be found in the animal kingdom:
Sea horses: The “Mr. Moms” in the sea, male sea horses, carry up to 2,000 fertilized
eggs in small bags in their stomachs until they hatch. Even after the babies are born, they stay inside the bag until they are ready to live by themselves.
Darwin’s rheas: Thought your dad was overprotective? Darwin’s rheas, also known as South American ostriche
s (鸵鸟), are so protective of their children that they have even been known to attack small airplanes on the grou
nd if they get too close to their home!
Marmosets: These little monkeys do everything but give lectures on how to give birth! Devoted dads assist during their babies’ birth. They also let Mom get some rest by taking care of the kids when she’s not nursing them.
Sand grouse: These pigeon-like birds live in areas where water is rare, so fathers fly as many as 50 miles to get water for their kids. After they dip their breast feathers in the water, they fly home and let their chicks suck the water from their bodies.
Fathers in the animal kingdom are not that different from our own beloved dads. This Father’s Day, when you are honoring your dad, honor animal dads, to
o, by practicing kindness toward all animals. The underlined “they” in paragraph 2 refers to .
| A．fertilized eggs | B．their stomachs | C．male sea horses | D．baby sea horses |
According to the passage, which animal is the most protective?
| A．A sea horse | B．A Darwin’s rhea | C．A marmoset | D．A san grouse |
The passage mainly tells readers .
A．how clever an d brave animals are |
| B．how to honor animal dads on Father’s Day |
| C．animal dads are different from human dads |
| D．some interesting facts about male animals |
Americans have taken over from the Indians many things besides their continent! Where did corn, potatoes, tomatoes, chocolate and maple sugar come from? The Indians. Who invented moccasins, snowshoes and hammocks? The Indians!
A list of the tools, plants, materials and designs we owe to the Indians would include hundreds of items. But there is something far more familiar, something that is always at hand. It is used daily by every American: a large vocabulary of Indian words.
Potato, tomato, chocolate, moccasin and hammock came into English from Indian languages. So did cocoa, tobacco, maize (an Indian word for corn) and succotash. Some words have changed on the way. Potato, for example, comes from a word that sounds like “batata”. Cocoa began as “cacahuatl”.
Some meanings have also changed. The long Indian word from which succotash comes means “something broken off in bits”. Indian women often varied their dishes by mixing bits of one food with another. White men who ate an Indian di
sh of mixed lima beans (青豆) and corn began using the Indian word to mean this particular mixt
ure.
Put on your moccasins and take a walk in the country. If it is a cold day and you wear a mackinaw, your jacket will be as Indian as your shoes. But mackinaw came from “michilimackinac”, the Indian name of a place where a fort (集市) served as a trading post. Bright-colored blankets or jackets bought at the post soon became known as “mackinaws”.
Early white visitors to the continent found Indian words useful for the things new to them. But some Indian sounds, such as the “tl” at the end of many words, were hard to say. That is why “coyotl” became coyote and “tomatle” became tomato.
Some words simply seemed too long. So, “musickwautash” became succotash and “rockahominy” became hominy.The first two paragraphs may serve as a(n) .
| A．explanation | B．introduction | C．comment | D．background |
Which of the following has been changed for easier pronunciation?
| A．Batata | B．Chocolate | C．Tomatle | D．Rockahominy |
Some words have changed because .
| A．they are too long |
| B．nobody can use them |
| C．the things they refer to have disappeared |
| D．they are too difficult for people to write |
What is the pass
age mainly about?
| A．How Indian traditions affect us. |
| B．Why Indian words were changed. |
| C．Things we owe to the Indians. |
| D．Indian words all around us. |
If you want to fully enjoy your vacation, then you’d better check the Durban City Tours! This is actually one of the best choices in South Africa today.
There is nothing more relaxing than to think about it that there is a place to go and relax, right? City life is stressful, but you can escape this situation and be in the place where there is noting but fun. Here in Durban you will get to see all the amazing tourist attractions. If you love animals and want to see some elephants wandering around the streets, then Durban is the place to go. You can even get to ride one if you want!
Here you will also get to taste all the delicious South African food. You can choose from Italian cooking to its native dishes. Durban is a great place to tour with your friends and family. You will learn a lot about its history through th
e landmarks you will see down the streets. Tourists and even the local villagers just can’t get enough of these treats!
However, it is important that you make the necessary arrangements. There are actually lots of tour guides that will help you as you make your journey along the streets of Durban. But if you prefer the best tour guides here in Durban, then you’d better settle for the Street Scene Tours. Their staff are all well-trained and professional. Th
ey will certainly make your stay here an unforgettable one. No wonder tourists prefer the Street Scene Tours when it comes to Durban City Tours.What is the main idea of Paragraph 2?
| A．Durban is a relaxing city. |
| B．City life means high pressure. |
| C．It is good to have a place to relax. |
| D．One can have fun riding elephants. |
If you walk in the stre
et of Durban, what will impress you most?
| A．Tourists from all over the world. |
| B．The buildings and many kinds of animals. |
| C．The streets and some wandering elephants. |
| D．The friendly local people and the scenery. |
. What does the last sentence in Paragraph 3 show?
| A．The food can’t satisfy them. |
| B．They are bored with the streets. |
| C．They are treated very well here. |
| D．They never get tired of the sights. |
The author wrote the last paragraph mainly to .
| A．attract tourists to Durban |
| B．help readers make arrangement |
| C．introduce the tour guides in Durban |
| D．persuade tourists to choose the Street Scene Tours |
The New York Times announced Wednesday that it intended to charge frequent readers for access to its Web site, a step being debated across the industry that nearly every major newspaper has so far feared to take.
Starting in early 2011, visitors to NYTimes.com will get a certain number of articles free every month before being asked to pay a flat fee for unlimited access. Subscribers（订阅者） to the newspaper’s print edition will receive full access to the site.
But exec
utives(执行主管) of The New York Times Company said they could not yet answer fundamental questions about the plan, like how much it would cost or what the limit would be on free reading. They stressed that the amount of free access could change with time, in response to economic conditions and reader demand.
Still, publishers fear that income from digital subscriptions would not compensate for the resulting loss of audience and advertising revenue.
NYTimes.com is by far the most popular newspaper site in the country, with more than 17 million readers a month in the United States, according to Nielsen Online, and analysts say it is easily the lead
er in advertising revenue, as well. That may make it better positioned than other general-interest papers to charge — and also gives The Times more to lose if the move backfires.
The Times Company has been studying the matter for almost a year, searching for common ground between pro- and anti-pay camps — a debate mirrored in dozens of media-watching blogs — and the system will not go into effect until January 2011. Executives said they were not bothered by the prospect of absorbing barbs（冷嘲热讽） for moving cautiously.
“There’s no prize for getting it quick,” said 
Janet L. Robinson, the company’s president and chief executive. “There’s more of a prize for getting it right.”The first paragraph serves as a __________.
| A．conclusion | B．comment | C．lead-in | D．background |
We may know from the passage that __________.
A．non-paying readers will get no access to N YTimes.com |
| B．readers will be charged more to read more articles on NYTimes.com |
| C．visitors to NYTimes.com frequently will get more free online articles |
| D．subscribers to the print edition will enjoy free access to the site as well |
Which of the following best describes The Times Company's attitude towards its announcement?
| A．rude | B． serious | C．hurried | D．doubtful |
The passage is mainly about_________.
| A．the Times to offer free access to its web site |
| B．the Times to increase audience to its web site |
| C．the Times to attract advertisement to its web site |
| D．the Times to charge for frequent access to its web site |
What makes it rain? Rain falls from clouds for the same reason anything falls to Earth. The Earth's gravity pulls it. But every cloud is made of water droplets or ice crystal(冰晶). Why doesn't rain or snow fall constantly from all clouds? The droplets or ice crystals in clouds are extremely small. The effect of gravity on them is slight. Air currents move and lift droplets so that the net downward amount of water is zero, even though the droplets are moving constantly.
It can be seen that droplets and ice crystals behave somewhat like dust in the air in a beam of sunlight. To the casual observer, dust seems to act in a totally random fashion, moving about
without fixed direction. But in fact dust particles（分子） are much larger than water droplets and they finally fall. The average size of a cloud droplet is only 0.0004 inch in diameter（直径）. It is so small that it would take sixteen hours to fall half a mile in perfectly still air, and 
it
doesn't fall out of moving air at all. Only when the droplet grows to a diameter of 0.008 inch or larger can it fall from the cloud. The average raindrop contains a million times as much water as a tiny cloud droplet. The growth of a cloud droplet to a size larger eno
ugh to fall out is the cause of rain and other forms of precipitation. This important growth process is called "coalescence". Ice crystals do NOT immediately fall to Earth because.
| A．they are kept up by air currents |
| B．most of them change into steam |
| C．they combine with other chemicals in the atmosphere |
| D．their electrical charges draw them away from the earth |
The underlined word "random" in line 10 most probablymeans .
| A．unpredictable | B．strict | C．independent | D．abnormal |
What can be inferred about drops of water larger than 0.008 inch in diameter?
| A．They never occur. |
| B．They are not affected by the force of gravity. |
| C．In moving air they would fall to earth. |
| D．In still air they fall a speed of thirty-two miles per hour. |
How much bigger is the rain drop than a loud droplet?
| A．200 times bigger |
| B．1,000 times bigger |
| C．100,000 times bigger |
| D．1,000,000 times bigger |