题目列表(包括答案和解析)
Many kids turn up their noses at the thought of eating fish because, well, it can smell "fishy". While it is usually a healthy source of protein in the diet, there may be several reasons to avoid biting into a forkful of fish. Before you break out the tartar sauce, learn some facts about fish to keep yourself and the environment healthy.
Some fish may contain harmful chemicals, which can be the result of both natural causes and water pollution. Mercury is a poisonous chemical, which occurs naturally in oceans and the Earth’s crust, but also comes from man-made sources, such as pesticides, burning garbage, and the releasing of fossil fuels.
Polychlorinated biphenyls (PCBs), a group of chemicals, can also be found in some fish. These dangerous man-made chemicals were used in many industries until 1977, when they were banned. PCBs were released or leaked into the air and water and have been transported around the globe.
How do mercury and PCBs end up in fish and the food supply? When they are released into the air, they attach themselves to particles. These particles settle on the ground and in the water and are eventually eaten by microscopic organisms. Small fish eat the micro-organisms, and large fish eat the small fish and on up the food chain.
Because they can negatively affect your health, the U.S. Environmental Protection Agency advises that kids younger than 15 years old avoid fish that contain high levels of mercury and PCBs. These include shark, swordfish, king mackerel, and tilefish.
There are also many types of fish that are good for you, but because of overfishing are in danger of being wiped out. Some are being fished in the wild so much that they cannot reproduce fast enough to survive. Others are being farmed in ways that are not environmentally friendly. These fish include red snapper, Atlantic salmon, blue-fin tuna, and king crab.
Despite these problems, there are several fish that are both healthy and sustainable, such as Alaskan salmon, American catfish, Pacific cod, and several farm-raised fish and shellfish.
51. How do mercury and PCBs come to our food supply?
A. Mercury and PCBs--water --fish -- particles --food supply
B. Mercury and PCBs--particles -- organisms-- fish -- food supply
C. Mercury and PCBs--particles -- fish -- organisms -- food supply
D. Mercury and PCBs―organisms--ground and water -- fish -- food supply
52. The underlined word "they" (paragraph 5) refers to " ".
A. fish B. particles C. microscopic organisms D. mercury and PCBs
53. According to the passage which group of fish can be safely eaten by young kids?
A. Shellfish; tilefish; Alaskan salmon.
B. King crab; king mackerel; Pacific cod.
C. Pacific cod; Alaskan salmon; American catfish.
D. Pacific cod; Atlantic salmon; swordfish.
54. The writer is most likely to agree that .
A. we should be careful when deciding what kind of fish to eat
B. overfishing is the main cause of fish poisoning
C. most types of fish can be safely raised on fish farms
D. the government should ban children under 15 from eating fish
55. It can be inferred from the passage that .
A. children like eating fish because it smells fishy
B. if you want to be more environmentally friendly, eat less fish
C. PCBs were not allowed to be used in food industry before 1977
D. adults might be less affected by high chemical levels in fish
| Directions: Read the following text and choose the most suitable heading from A-F for each paragraph. There is one extra heading which you do not need. | |
| |
| 1.______ The causes of eating disorders are not clear. There may be genetic or biochemical factors in some cases. There may be psychological problems from early childhood or the present (such as school or family conflicts) that trigger the problem. Often, there is the double pressure to enjoy life through food and yet remain ultra-slim. Society all around us encourages eating and drinking as main ways to enjoy life. To be popular, you are supposed to eat. 2.______ But in real life most people, if they keep consuming like that, just keep pulling on more and more weight. They then find themselves in conflict with another dominant pressure in society-to stay slim and trim. Models in ads, even those shown earring fairy foods, are usually physically lit and quite thin. All of these pressures put teens in a terrible situation. The "solution" that some teens choose is to deny themselves all the time so as to keep temptation away. But soon, hunger and food boredom lead to overeating. Over time they develop anorexia or ballerina. 3.______ Once an earring disorder has become firmly established, there is no easy cure. Someone who's never suffered anorexia and never known an anorexic might be tempted to think. "It's simple-just tell them to eat more!" Unfortunately, it's not that simple. Even when anorexics have been brought into the hospital and arc receiving physical care, nutritional therapy, and psychiatric care, many don't improve much. 4.______ Our society's obsession with thinness, together with a constant emphasis on the theme that rich food means pleasure, puts many teens in a difficult situation. Being drawn to overeating on the one hand and self-denial on the other can bring about anorexia or bulimia-or both. Anorexics seem to feel that no matter how much weight they lose, they are still too fat Therefore, it is important for each person in our society to try to maintain a health y and realistic self-image. Don't compare yourself with the models and actors in the media Set your sights more realistically by comparing yourself with family and friends, if anyone. 5.______ Self-denial is the typical first step toward an caring disorder. Eventually, desires for what you've denied yourself become unbearable, and you react with either a binge or overly fierce self-control. The answer is not of course. 10 eat all the snacks and traces you fancy. But 10 avoid that first step that leads to overeating, strive for a good and healthy diet. Such a diet is based primarily on grain products, fruits, and vegetables, with moderate amounts of meat and dairy products and with small amounts of snacks and desserts. Research demonstrates that miss kind of diet leaves you more alert and energetic. |
Every person needs water and a diet of __36_ foods. These foods should contain some fat, some fiber, a little salt and so on.
People need energy 37 . They eat different kinds of food which change into _38___. The energy is __39__ in calories. Even when you 40 , you are using energy – about 65 calories an hour. 41__ you are at school, or walking home, your body is burning up 100 calories an hour. When playing football or basketball, you 42 be using 400 calories an hour. On Sports Day, during the relay race, you will use most of all, 43 as much as 650 calories an hour.
The Chinese diet is considered to be the healthiest in the world. It contains a lot of fruit and green vegetables. It is 44 in fiber and low in sugar and fat. The Chinese eat less sugar than many other countries in the world. That is 45 lots of people in China have healthy white teeth.
People in the Western world do not eat 46 healthy foods. They eat 47 fat and sugar 48 don’t take enough 49 . Because of this, they 50 weight very easily. Their diet contains a lot of fat in the 51 of potato crisps, potato chips, __52_, cream and chocolate. They eat a lot of sugar which exist in cakes, soft drinks, 53 and so on. The result is that many of them become fat. 54 some have bad teeth. In some parts of Britain, one person in ten, 55 the age of thirty, has no teeth left.
36.A. healthy B. health C. cheap D. expensive
37. A. for life B. live C. to live with D. for a living
38. A. fat B. energy C. power D. strength
39. A. measuring B. taken C. measured D. measure
40. A. are asleep B. fall asleep C. go to sleep D. go to bed
41. A. While B. During C. As D. If
42. A. must B. can C. need D. might
43. A. surely B. usually C. perhaps D. hardly
44. A. rich B. poor C. good C. bad
45. A. how B. why C. what D. that
46. A. so B. such C. quite D. very
47. A. much too B. many too C. too many D. too much
48. A. and B. but C. so D. because
49. A. exercises B. food C. work D. exercise
50. A. put on B. gain on C. get on D. put up
51. A. type B. form C. kind D. sort
52. A. vegetables B. tomato C. butter D. rice
53. A. sweets B. sweet C. candy bar D. sweet thing
54. A. But B. Or C. And D. So
55. A. at B. for C. with D. by
| 完形填空。 | |||
| Every person needs water and a diet of healthy foods. These foods should contain some fat, some fiber, a little salt and so on. People need energy __1__ . They eat different kinds of food which change into energy. The energy is___2__ in calories. Even when you __3__, you are using energy - about 65 calories an hour. __4__you are at school, or walking home, your body is burning up 100 calories an hour. When playing football or basketball, you __5__be using 400 calories an hour. On Sports Day, during the relay race, you will use most of all, __6__as much as 650 calories an hour. The Chinese diet is considered to be the healthiest in the world. It contains a lot of fruit and green vegetables. It is __7__in fiber and low in sugar and fat. The Chinese eat less sugar than many other countries in theworld. That is __8__lots of people in China have healthy white teeth. People in the Western world do not eat such healthy foods. They eat __9__fat and sugar and don’t take enough __10__. Because of this, they __11__weight very easily. Their diet contains a lot of fat in the __12__of potato crisps, potato chips, butter, cream and chocolate. They eat a lot of sugar which exist in cakes, soft drinks,__13__and so on. The result is that many of them become fat.__14__ some have bad teeth. In some parts of Britain, one person in ten, __15__the age of thirty, has no teeth left. | |||
| ( )1. A. for life ( )2. A. measuring ( )3. A. are asleep ( )4. A. While ( )5. A. must ( )6. A. surely ( )7. A. rich ( )8. A. how ( )9. A. much too ( )10. A. exercises ( )11. A. put on ( )12. A. type ( )13. A. sweets ( ) 14. A. But ( )15. A. at |
B. to live B. taken B. fall asleep B. During B. can B. usually B. poor B. why B. many too B. food B. gain on B. form B. sweet B. Or B. for |
C. to live with C. measured C. go to sleep C. As C. need C. perhaps C. good C. what C. too many C. work C. get on C. kind C. candy bar C. And C. with |
D. for a living D. measure D. go to bed D. If D. might D. hardly C. bad D. that D. too much D. exercise D. put up D. sort D. sweet thing D. So D. by |
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