题目内容

Eating nuts may help lower cholesterol（胆固醇） levels，US research suggests．

The review of 25 studies，involving nearly 600 people，showed eating on average 67g of Nuts-a small bag-a day reduced cholesterol levels by 7.4%．

The US Loma Linda University team believes nuts may help prevent the absorption of cholesterol.

    UK experts said the research showed nuts were an important part of a healthy diet，but warned against eating nuts covered in sugar or salt.

    Previous work has indicated eating nuts regularly is beneficial，but the Archives of Internal Medicine study set out to put an accurate figure on the effect.

The people involved ate 67g of nuts a day on average，over a period of three to eight weeks．

As well as improving cholesterol levels，it also reduced the amount of triglyceride，a type of blood fat that has been linked to heart disease．

    However，the impact was least pronounced among the overweight．

    It is not yet dear why nuts have this effect，although one suggestion is that it is down to the plant sterols they contain，which are thought to interfere with cholesterol absorption．

    Lead researcher，Joan Sabate said increasing nut consumption as part of a healthy diet should be recommended.

    He added：“The effects of nut consumption were dose related，and different types of nuts had similar effects．”

    Ellen Mason，senior Cardiac nurse at the British Heart Foundation，agreed，but she urged people to go for unsalted nuts．

    “Apart from salted peanuts at the pub，nuts in sugary cereals or the traditional Christmas selection，nuts have been largely lacking in our diets in the UK，”she added．

   The study was carried out by independent researchers，although it was partly funded by the International Tree Nut Council Nutrition Research and Education Foundation.

1．The passage is mainly about_______．

    A．ways of eating nuts

B．advantages of eating nuts

    C．experts' opinions about nuts

    D．different opinions about nuts

2．The underlined sentence may best suggest that _______．

A．nuts may have the least effect on the overweight

    B．nuts may have the same effect on the overweight

    C．researchers haven't done as much research on the overweight

    D．the report doesn't include much on the effect on the overweight

3．The purpose of the writer's mentioning “The study was carried out by independent researchers”in the last paragraph is_______．

A．to stress that the result of the research is reliable

     B．to ignore the importance and effect of being funded

     C．to stress the research is not an official one

     D．to provide more information about the research

4．Joan Sabates' recommendation implies that_______．

     A．nuts haven't been listed in people's healthy diets

     B．people should eat more unsalted peanuts.

     C． nuts help people reduce the risk of heart diseases

D．nuts have good effects on people of all ages and weights

5．From the passage we can learn that_______．

     A．researchers have found why nuts have good effect on health

     B．nuts of all kinds are popular in the UK

     C．the reasons why nuts have healthful effect are still unknown

     D．experts' opinions on ways of eating nuts vary a lot

BDDAC

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Peanut allergies (过敏) are among the most common and most dangerous of food allergies. A tiny exposure to peanuts can mean big trouble for a person with a peanut allergy—not just sneezing or coughing，but something as potentially deadly as narrowing of the airways.
But a recent study suggests that some children may be able to beat back their allergic reactions to peanuts by gradually introducing trace amounts of the nut into their diets. It's too early to say for certain，so if you have a peanut allergy，do not try this at home. But the first results look promising.
Two teams of scientists have been experimenting on a group“of 29 children who are allergic to peanuts”At the beginning of the study，each kid received less than 1/1，000 of a peanut per day. (Imagine splitting a peanut into 1，000 parts!) Over the course of the study， the children gradually increased the amount of the peanut in their diets
Nine of the children have been receiving the treatment for two years，and five of those nine now appear to be free of their peanut allergies，and can eat peanuts with no problem. But the other four have not benefited so much from the therapy（治疗）.
The two teams of scientists are now doing a follow-up study on two groups of children with the allergy. Children in one group will receive the new therapy，while the others will not. Researchers hope this study will help them learn if the therapy truly does work.
Scientists don't understand why some people get peanut allergies and others don't，but are trying to find a way to help people with the allergy. Because of the severity of some peanut allergies，scientists want to know the answer as soon as possible. “This is very encouraging， but remember，it's not something you try at home，”says one of the researchers.
68.According to the passage，the peanut allergy     .
A. can be deadly if only a small amount is used
B. causes a lot of trouble for many parents
C. allows people to eat only small amounts of peanuts
D. is considered the least common and dangerous food allergy
69.Scientists are trying to treat peanut allergies by     .
A. exposing children with the allergy to as many peanuts as possible
B. changing the eating habits of children with peanut allergies gradually
C. giving children Peanuts in slowly increasing amounts
D. exploring ways to resist the feelings caused by peanut allergies
70.The experiment shows that     . 
A. people with peanut allergies can't use small amounts of peanuts in their diets.
B. children are more easily cured than adults
C. all children can be cured of their peanut allergies if given more time of treatment
D. about 55-percent children with peanut allergies have been cured
71. Scientists are now doing a follow-up study in order to     .
A. explore why some people get the illness while others don’t
B. show whether peanut allergies can really be dangerous
C. check whether the therapy really works or not
D. explore whether the allergy can be cured without treatment

Foresters are people who work with trees and know a lot about them. Occasionally, foresters have problems, and the foresters in southern Indiana have had many problems.
The foresters were doing an experiment. They wanted to grow walnut (胡桃) trees by planting walnuts in the ground. If they succeeded, the foresters would be able to control the location of the trees. Also, this method would be much cheaper than transplanting or moving nut trees that were grown in plant nurseries (苗圃) . So the foresters planted their walnuts, and that’s when the squirrels (松鼠) started causing trouble. Shortly after the nuts were planted, the squirrels dug them up for tasty snacks (快餐) .
The foresters tried to keep the squirrels away from the walnuts. Mothballs (卫生球) were used as a warning, but they didn’t work. Then, the foresters tried dipping the walnuts in kerosene (煤油) ,  but that didn’t stop the squirrels either. The foresters continue to search for a method that will really work. But until they find one, the squirrels can continue to have their walnut snacks and the foresters will have to transplant trees!
【小题1】Foresters are people who        .

A．look after the forest and work with trees
B．feed squirrels in the forest
C．catch squirrels that steal walnuts
D．transplant trees
【小题2】What were the foresters trying to do with the walnuts?
A．Plant food for squirrels.B．Control the location of the trees.
C．Move the trees closer to the squirrels.D．Get squirrels to eat them.
【小题3】The underlined word “transplanting” probably means “       ”.
A．plantingB．movingC．growingD．buying
【小题4】What did the squirrels do to the walnuts that were dipped in kerosene?
A．Left them alone.B．Continued to eat them.
C．Hid them in treesD．Put them into the earth.
【小题5】According to the story, which of the following is not true?
A．Mothballs didn’t prove to be a good method of stopping the squirrels from eating the walnuts.
B．The squirrels found the walnuts tasty.
C．The squirrels started eating mothballs instead of walnuts.
D．The forester haven’t found a good way to prevent the squirrels from eating the walnuts.

GUATEMALA CITY （Reuters） – A fish that lives in mangrove swamps（红树沼泽）across the Americas can live out of water for months at a time, similar to how animals adapted（适应）to land millions of years ago, a new study shows.
The Magrove Rivulus, a type of small killifish, lives in small pools of water in a certain type of empty nut or even old beer cans in the mangrove swamps of Belize, the United States and Brazil. When their living place dries up, they live on the land in logs（圆木），said Scott Taylor, a researcher at the Brevard Endangered Lands Program in Florida.  
The fish, whose scientific name is Rivulus marmoratus, can grow as large as three inches. They group together in logs and breathe air through their skin until they can find water again. 
The new scientific discovery came after a trip to Belize.  “We kicked over a log and the fish just came crowding out,” Taylor told Reuters in neighboring Guatgemala by telephone. He said he will make his study on the fish known to the public in an American magazine early next year. 
In lab tests, Taylor said he found the fish can live up to 66 days out of water without eating. 
Some other fish can live out of water for a short period of time. The walking catfish found in Southeast Asia can stay on land for hours at time, while lungfish found in Australia, Africa and South America can live out of water, but only in an inactive state. But no other known fish can be out of water as long as the Mangrove Rivulus and remain active, according to Patricia Wright, a biologist at Canada’s University of Guelph. 
Further studies of the fish may tell how animals changed over time. 
“These animals live in conditions similar to those that existed millions of years ago, when animals began making the transition（过渡）from water onto land,” Wright said.  
【小题1】The Mangrove Rivulus is a type of fish that _______. 

A．likes eating nuts
B．prefers living in dry places
C．is the longest living fish on earth
D．can stay alive for two months out of water
【小题2】Who will write up a report on Mangrove Rivulus?
A．Patricia WrightB．Researchers in Guatemala
C．Scientists from BelizeD．Scott Taylor
【小题3】According to the text, lungfish can________
A．breathe through its skin
B．move freely on dry land
C．remain alive out of water
D．be as active on land as in water
【小题4】What can we say about the discovery of Mangrove Rivulus?
A．It was made quite by accident
B．It was based on a lab test of sea life
C．It was supported by an American magazine
D．It was helped by Patricia Wright

Foresters are people who work with trees and know a lot about them. Occasionally, foresters have problems, and the foresters in southern Indiana have had many problems.

The foresters were doing an experiment. They wanted to grow walnut (胡桃) trees by planting walnuts in the ground. If they succeeded, the foresters would be able to control the location of the trees. Also, this method would be much cheaper than transplanting or moving nut trees that were grown in plant nurseries (苗圃) . So the foresters planted their walnuts, and that’s when the squirrels (松鼠) started causing trouble. Shortly after the nuts were planted, the squirrels dug them up for tasty snacks (快餐) .

The foresters tried to keep the squirrels away from the walnuts. Mothballs (卫生球) were used as a warning, but they didn’t work. Then, the foresters tried dipping the walnuts in kerosene (煤油) ,  but that didn’t stop the squirrels either. The foresters continue to search for a method that will really work. But until they find one, the squirrels can continue to have their walnut snacks and the foresters will have to transplant trees!

 

1.Foresters are people who        .

A. look after the forest and work with trees       

B. feed squirrels in the forest

C. catch squirrels that steal walnuts           

D. transplant trees

2.What were the foresters trying to do with the walnuts?

A. Plant food for squirrels.           B. Control the location of the trees.

C. Move the trees closer to the squirrels. D. Get squirrels to eat them.

3.The underlined word “transplanting” probably means “        ”.

A. planting          B. moving       C. growing          D. buying

4.What did the squirrels do to the walnuts that were dipped in kerosene?

A. Left them alone.                  B. Continued to eat them.

C. Hid them in trees                 D. Put them into the earth.

5.According to the story, which of the following is not true?

A. Mothballs didn’t prove to be a good method of stopping the squirrels from eating the walnuts.

B. The squirrels found the walnuts tasty.

C. The squirrels started eating mothballs instead of walnuts.

D. The forester haven’t found a good way to prevent the squirrels from eating the walnuts.

 

Peanut allergies (过敏) are among the most common and most dangerous of food allergies. A tiny exposure to peanuts can mean big trouble for a person with a peanut allergy—not just sneezing or coughing，but something as potentially deadly as narrowing of the airways.

But a recent study suggests that some children may be able to beat back their allergic reactions to peanuts by gradually introducing trace amounts of the nut into their diets. It's too early to say for certain，so if you have a peanut allergy，do not try this at home. But the first results look promising.

Two teams of scientists have been experimenting on a group“of 29 children who are allergic to peanuts”At the beginning of the study，each kid received less than 1/1，000 of a peanut per day. (Imagine splitting a peanut into 1，000 parts!) Over the course of the study， the children gradually increased the amount of the peanut in their diets

Nine of the children have been receiving the treatment for two years，and five of those nine now appear to be free of their peanut allergies，and can eat peanuts with no problem. But the other four have not benefited so much from the therapy（治疗）.

The two teams of scientists are now doing a follow-up study on two groups of children with the allergy. Children in one group will receive the new therapy，while the others will not. Researchers hope this study will help them learn if the therapy truly does work.

Scientists don't understand why some people get peanut allergies and others don't，but are trying to find a way to help people with the allergy. Because of the severity of some peanut allergies，scientists want to know the answer as soon as possible. “This is very encouraging， but remember，it's not something you try at home，”says one of the researchers.

68.According to the passage，the peanut allergy     .

A. can be deadly if only a small amount is used

B. causes a lot of trouble for many parents

C. allows people to eat only small amounts of peanuts

D. is considered the least common and dangerous food allergy

69.Scientists are trying to treat peanut allergies by     .

A. exposing children with the allergy to as many peanuts as possible

B. changing the eating habits of children with peanut allergies gradually

C. giving children Peanuts in slowly increasing amounts

D. exploring ways to resist the feelings caused by peanut allergies

70.The experiment shows that     . 

A. people with peanut allergies can't use small amounts of peanuts in their diets.

B. children are more easily cured than adults

C. all children can be cured of their peanut allergies if given more time of treatment

D. about 55-percent children with peanut allergies have been cured

71. Scientists are now doing a follow-up study in order to     .

A. explore why some people get the illness while others don’t

B. show whether peanut allergies can really be dangerous

C. check whether the therapy really works or not

D. explore whether the allergy can be cured without treatment

 

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