Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need．It has been demonstrated（證明）that rats will, when given a choice over a period of time, prefer water with vitamins(維生素) to water without vitamins even though there is no difference in taste or smell between the two water bottles．When a fragrant（香的）flavor（作料）was added to the vitamin-enriched water, the rats did seem to prefer it and kept drinking it ,even after the vitamins were switched to the clear water．In time, however, they broke the habit and went back to where the necessary vitamins were．
In a classic experiment, babies of 6 to 12 months old were placed in a cafeteria（自助） feeding arrangement, with a wide selection of baby food before them．They were given whatever food they pointed to or appeared interested in．We are told that at first they showed some unusual eating patterns, but that over a period of time they managed to select well-balanced diet．
So, in choosing food, rats and babies do seem to know and act on what's best for them．Apparently, there is a kind of “body wisdom”, which humans soon lose．Most of us do not eat as wisely as we could．Many of our food preferences are culturally determined and influenced by long-formed habits．Some people eat fox, dog and blackbirds, while we eat cows and pigs．So what people eat and how much they eat seems to be greatly influenced by what is going on around them．
In the experiment on rats, a fragrant flavor was added to the rats’ drinking water to _____________ .
A．encourage rats to drink vitamins-enriched water
B．test whether rats know which drink is good for them
C．find out rats’ preference in flavor
D．demonstrate the vitamins are tasteless
According to the passage ,adults eating habits differ from those of babies because_________．
A．a(chǎn)dults know better than babies what kind of food are good for their health
B．a(chǎn)dults usually cannot resist the temptation of various delicious foods
C．a(chǎn)dults have more choices of food than babies in eating patterns
D．a(chǎn)dults' eating habits are closely related to the social and cultural customs
The author implied in the passage that most of us_________．
A．eat a balanced diet
B．choose the food that is of nutrition
C．have the habits influenced by the surroundings
D．like to eat the food with a fragrant flavor．
As far as their eating habits are concerned, babies and rats are similar in that_________．
A．both prefer flavored food and drink
B．both have the wisdom to choose a balanced diet
C．both have the same eating patterns
D．both develop a taste for the same kinds of flavors
一線名師提優(yōu)試卷系列答案科目：高中英語 來源：英語教研室 題型：050
In 1931, it was discovered that some unknown substance present only in certain foods was necessary for good health. This substance was what is now called “Vitamin A”.
Vitamin A's biggest job is to keep the eyes going. Without it, people and animals get “night blindness” and eye problems. Lack of Vitamin A for a long time can even cause total blindness, particularly among children. This had a chance to be tested in Denmark during World Was I. Because of food shortage, many children had to eat man-made butter and skim milk（脫脂奶）, which contains no Vitamin A. Soon, they developed eye diseases. It was after they were given real butter and whole milk that they had no eye problems.
After Vitamin A was discovered, it took more than thirty years of experiments for scientists to be able to get a small amount of pure Vitamin A. Vitamin A is manufactured and is used successfully to treat a number of diseases. You can easily get enough Vitamin A by eating a variety of food. Good sources of Vitamin A are liver（肝臟） from some animals and dairy products such as milk and cream. Not only many vegetables contain carotene（胡蘿卜素）, from which your liver can make its own Vitamin A, some fruits also provide carotene which helps your liver to supply Vitamin A. As long as you are getting Vitamin A from food you won't need to take any extra in the form of liquid or pills.
(1)According to the passage, if Vitamin A is not provided enough, which of the following are likely to be affected most se riously?
[ ]
(2) Vitamin A is a very. important substance mainly because it _______.
[ ]
A．is hard to made
B．helps to keep one's eyes healthy
C．can make butter more delicious
D．can not be produced in large quantity
(3) What made the children in Denmark get eye diseases during World War I?
[ ]
A．The war they experienced.
B．Their poor housing conditions.
C．The experiments on food.
D．The lack of Vitamin A in their food.
(4) According to the text, the following are all good sources of Vitamin A except _______.
[ ]
(5) Which of the following could be the best title of the passage?
[ ]
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
[1] While the Amazon may seem far away, we are all closely connected to it through our actions. Now there are largely the results of great demand for forest products and agriculture land, which makes its plant and animal species in danger. Fortunately, we can help save the Amazon rainforest by making the right choices in our daily lives. By being smart consumers, we can make a difference and help reduce human pressures on the forests and rivers.
[2] Look for forestt products that you don ’ t need to destroy forests to get. We can choose many rainforest products like Brazil nuts and coffee, which can be got without destroying forests. And at the same time the money you provide can help local people to _______________.
[3] Recycle everything possible. Such items as batteries, cloth, glass, paper in our daily life can be recycled with different techniques. For example, the collected glass pieces are taken to a glass recycling factory where they are madeinto new glass bottles through a series of processing.
[4] Buy the rightpets. Many wild animals are illegally caught in the Amazon and sold as pets and large numbers of these animals die in the process. It ’ s important to ask where the animal comes from and to require a store to give you proof when you decide to buy a pet.
[5] Carefully select the appliances( 家用電器 ) in your home . For example, order low-flow shower heads ( 噴頭 ),which can reduce your use of hot water and use of energy to heat the water. So it ’ s wise to select the appliances which can save energy.
[6] Turn off appliances that you are not using and take the plug off them..Switch off TVs, computers, lights, etc. even when they are not being used and make sure the plug off the switch of some appliances that se electricity including TVs, video and audio systems, computers.
76. What is the main idea of the text ? (no more than 8 words)
________________________________________________________________________________
77. Fill in the blank in Paragraph 2 with proper words. (no more than 4 words)
And at the same time the money you provide can help local people to ________________________
78. L i st two threats to the wildlife in Amazon.(no more than 5 words)
________________________________________________________________________________
79. What ’ s the purpose of choosing the appliances carefully ?(no more than 4 words)
________________________________________________________________________________
80. What does the word “ they ” (L i ne 2, Paragraph 6) probably refer to?(no more than 1 word)
查看答案和解析>>
科目：高中英語 來源： 題型：閱讀理解
30th June
Dear Aihua,
How are you? Sorry I haven’t written for so long. I’ve been quite busy planning my holiday with may older brother, Coin. Do you still remember the trip I told you about? I told you Colin and I would spend a few weeks traveling before he goes to university. Well, now we’re ready to go! We’re going to visit so many exciting places and do lots of astonishing things. We will go to Africa first. I can’t wait! Have you been there?
We leave London on 15th July, and we’ll be flying to
After the trip by camel, we’ve going to travel down the River Nile. We’ll start at Lake Victoria. A little way down the river from
Since we’ll be walking every day for almost two weeks, I’ll need to buy a large, strong, light backpack to carry my supplies of food and water. During the day, we’ll walk across the land, following the footprints of big animals such as elephants, lions and giraffes. We’ll try to get as close as possible to the animals, even though they’re dangerous, so that I can take some really good photos. But don’t worry about me―our Guides will have guns with them to scare the animals away if they come too close. I really want to see an elephant up close. Colin wants to see a giraffe.
After that, we’ll be moving on to
Love
Toby
36. According to Paragraph 1, ______.
A. Toby is planning a business trip. B. Toby usually travels in his summer holiday.
C. Colin wants to travel before starting university D. Toby is not very excited about the trip.
37. The underlined “there” refers to _____.
A. the United States B. Morocco C. northern Africa D. the Sahara Desert
38. According to paragraph 2, _____.
A. Toby enjoys the traveling on camels B. Toby is worried about traveling on camels
C. Toby will feed the camels D. Colin loves camels
39. According to Paragraph 5, Toby wants to _____.
A. see a giraffe up close B. scare animals away
C. take photographs animals D. shoot an elephant
40. According to the letter, Toby enjoys _____.
A. comfortable, expensive holidays B. cultural holidays
C. adventure holidays D. staying at home
查看答案和解析>>
湖北省互聯(lián)網(wǎng)違法和不良信息舉報平臺 | 網(wǎng)上有害信息舉報專區(qū) | 電信詐騙舉報專區(qū) | 涉歷史虛無主義有害信息舉報專區(qū) | 涉企侵權(quán)舉報專區(qū)
違法和不良信息舉報電話：027-86699610 舉報郵箱：58377363@163.com
