Sweet potatoes are fat-free,high in fiber and full of the vitamins that research suggests reduce your risk of life-shortening diseases.To stay healthy,we must eat more fruits and vegetables,and sweet potatoes are a great source of beta carotene(胡蘿卜素)and other carotenoids.According to a study of the diets of almost 90,000 nurses,eating about one cup a day of fruils and vegetables rich in carotenoids(which the body turns into vitamin A)can cut your risk of stroke in halt and reduce your risk of heart disease by 22 percent.Other resear chsuggests beta carotene protects against breast,lung and stomach cancers.

  Beta carotene is the most famous member of the carotenoids family.In fact,a medium sized sweet potato contains nearly 12 mg of beta carotene(antiaging experts usually suggest 6 to 11 mg perday).Sweet potatoes are also a low-fat source of vitamin E.Research has linked high E diets with a lower risk of heart disease.This vitamin pill in an orange jacket also packs a vitamin C punch-it has more C than apricots(a kind of fruit).Research suggests that vitamin C protects against ailments ranging from cataracts(an eye disease)to cancer.In addition,A UCLA(University of California,Los Angels)study linked high vitamin C diets with a longer life.Recent studies have showed that antioxidant vitamins C,E and beta carotene fight a fierce battle against free radicals(自由基),which cause cell(細(xì)胞)damage and lead to various illnesses.Therefore,to keep fit,eat more sweet potatoes.

(1)

According to the text,there exists a lot of ________ in sweet potatoes.

[  ]

A.

fiber,beta carotene,other earotenoids,vitamin E and C

B.

beta carotene,other carotenoids,fiber,vitamin A and E

C.

vitamin A,beta carotene,fiber,vitamin E and C

D.

beta carotent,other carotenoids,vitamin A and E

(2)

This text as a whole suggests that eating sweet potatoes can help ________

[  ]

A.

cut your risk of stroke and heart disease

B.

protect against breast,lung and stomach cancers

C.

protect against ailments ranging from cataracts to cancer

D.

you stay healthy and reduce your risk of life shortening diseases

(3)

“This vitamin pill in an orange jacket”in the passage refers to ________

[  ]

A.

sweet potato

B.

vitamin C pill

C.

vitamin E pill

D.

beta carotene

(4)

The best title of this passage might be ________

[  ]

A.

The Vitamin Superstar

B.

On Sweet Potatoes

C.

Beta Carotene and Vitamins

D.

Diet and Disease

答案:1.A;2.A;3.A;4.A;
解析:

(1)

由文章第一段,第二段可知。

(2)

由文章第一段,第二段可知。

(3)

文章通篇介紹的都是紅薯。

(4)

因為紅薯富含維生素,所以稱它為維生素超級明星一點都不過分。


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科目:高中英語 來源:2011年普通高等學(xué)校招生全國統(tǒng)一考試英語試題北京卷 題型:050

閱讀理解

Students and Technology in the Classroom

  I love my blackberry-it’s my little connection to the larger world that can go anywhere with me.I also love my laptop computer ,as it holds all of my writing and thoughts.Despite this love of technology, I know that there are times when I need to move away from these devices(設(shè)備)and truly communicat with others.

  On occasion, I teach a course called History Matters for a group of higher education managers.My goals for the class include a full discussion of historical themes and ideas.Because I want students to thoroughly study the material and exchange their ideas with each other in the classroom, I have a rule-no laptop, iPads, phones, etc.When students were told my rule in advance of the class, some of them were not happy.

  Most students assume that my reasons for this rule include unpleasant experiences in the past with students misusing technology.There’s a bit of truth to that.Some students assume that I am anti-technology.There’s no truth in that at all.I love technology and try to keep up with it so I can relate to my students.

  The real reason why I ask students to leave technology at the door is that I think there are very few places in which we can have deep conversions and truly engage complex ideas.Interruptions by technology often break concentration and allow for too much dependence on outside information for ideas.I want students to dig deep within themselves for inspiration and ideas.I want them to push each other to think differently and make connections between the course the material and the class discussion.

  I’ve been teaching my history class in this way for many years and the evaluations reflect student satisfaction with the environment that I create.Students realize that with deep conversation and challenge, they learn at a level that helps them keep the course material beyond the classroom.

  I’m not saying that I won’t ever change my mind about technology use in my history class, but until I hear a really good reason for the change, I’m sticking to my plan.A few hours of technology-free dialogue is just too sweet to give up.

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Some of the students in the history class were unhappy with _________

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the course material

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The underlined word “engage” in para.4 probably means _________

[  ]

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explore

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change

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reject

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According to the author, the use of technology in the classroom may _________

[  ]

A.

keep students from doing independent thinking

B.

encourage students to have in-depth conversations

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help students to better understand complex themes

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affect students’ concentration on course evaluation

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It can be inferred from the last paragraph that the author _________

[  ]

A.

is quite stubborn

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will give up teaching history

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will change his teaching plan soon

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values technology-free dialogues in his class

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科目:高中英語 來源: 題型:閱讀理解

In the very early  1800’ s, a young boy about 14 years old named John lived in an orphanage (孤兒院) in Old England along with several other children. Orphan meant unwanted and unloved.

Christmas was the one day of the year when the children didn’t work and received a gift, an orange. Usually they tried to taste and preserve it for so long that it often rotted before they ever peeled(剝開)it to enjoy the sweet juice. Many thought were expressed as Christmas time approached. The children would say, “I will keep mine the longest.” John usually slept with his next to his pillow. This year John was overjoyed by the Christmas season. He was becoming a man and stronger and soon he would be old enough to leave. He would save his orange until his birthday in July.

Christmas day finally came. The children were so excited as they entered the big dining hall. Immediately the master shouted, “John, leave the hall and there will be no orange for you this year.” John’s heart broke violently wide open. He turned and went swiftly back to the cold room. Then he heard the door open and each of the children entered. Little Elizabeth with her hair falling over her shoulders, a smile on her face, and tears in her eyes held out a piece of rag to John. “Here John,” she said, “this is for you.” As he lifted back the edges of the rag he saw a big juicy orange all peeled and quartered and then he realized what they had done.

John never forgot the sharing, love and personal sacrifice his friends had shown him that Christmas day. In memory of that day every year he would send oranges all over the world to children everywhere.

1. The first paragraph is mainly to tell us that ______.

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   A. they got the special gift                 B. they preserved it very long

   C. they finally enjoyed the sweet juice       D. they entered the dining hall

3. What would overjoy John most the next year according to the second paragraph?

   A. He placed his orange next to his pillow.

   B. He would eat his orange on his birthday.

   C. He wouldn’t get his special gift.

   D. He would stay in the orphanage for another year

4. According to the text, where did John’s orange come from this year?

   A. It was made up of what these children donated.

   B. His master gave him a whole one again.

   C. These children bought him one.

   D. Little Elizabeth donated hers to John.

5. What can be inferred from the text?

   A. John had expected he wouldn’t get the gift this year.

   B. John knew why he didn’t get the gift this year.

   C. John felt ashamed for not getting the special gift.

   D. The story teaches us to learn to share with others.

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科目:高中英語 來源:2009年全國各省市高考命題動態(tài)信息卷(遼寧專用) 英語(五) 題型:閱讀理解


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  閱讀下列短文,從每題所給的四個選項(A、B、C和D)中,選出最佳選項,并在答題卡上將該項涂黑。
A
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  Growing levels of air pollution from power plants and automobiles have reduced flower fragrances (芬芳) by up to 90 percent in the US.That is compared with pre-industrial levels,a new study has found.
  The trend is unpleasant for human noses,but may be life - threatening for bees and butterflies.
  "Many insects find flowers by folowing the scent(香味) produced by those flowers," said the studies lead author Jose D.Fuentes,an environmental scientist at the University of Virginia.
  "The increasing pollution makes it difficult for them to locate the flowers and feed on their nectar(花蜜)."
  Scientists have alrady known that flowers produce scent molecules(分子) that bond with pollutants.The process breaks down the plants' sweet smell.
  With more pollution in the air,the scent molecules don't remain effective as long and travel shorter distances on the wind.
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  The report was recently published in the journal,Atmospheric Environment.
  Bee farmers have reported that bee populations are dropping dramatically in many parts of the world in recent years. Could these missing scents be a factor?
  Scientists trying to hind the cause of bee population declines have blamed bacteria,pesticides,and even cellphone radiation.
  Jay Evans,an entomologist(昆蟲學(xué)者) at the US Department of Agriculture's bee research laboratory,was interested in the new study.But he says he hasn't seen bee behavior that suggests trouble with scents.
  "Over the last couple of summers I don't think the bees in this area were bringing in much less food,"he said.
  "It might be that they had to work harder,but it seems like as long as there were bees to collect food they were finding flowers somewhere."
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  "The effects shown in these studies will simply exacerbate whatever the bees are going through right now,"he said.
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   C.Measures to fight air pollution.
   D.The rapid decline of bee populations in the world.
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Here I am faced with a painful small decision: To tear up a wonderful and productive tomato plant that offers up between ten and twenty ripe sweet tomatoes each day or say goodbye to several expensive and treasured roses. Like Scarlett in Gone With the Wind, I’ll think about that tomorrow.

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A.Frequent pruning and fertilizing.          B.A lot of care and the right soil.

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A.the writer has a daily harvest of tomatoes

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科目:高中英語 來源:2015屆四川省成都市高一4月月考英語試卷(解析版) 題型:閱讀理解

Students and Technology in the Classroom

  I love my blackberry—it’s my little connection to the larger world that can go anywhere with me. I also love my laptop computer,as it holds all of my writing and thoughts. Despite this love of technology, I know that there are times when I need to move away from these devices(設(shè)備) and truly communicate with others.

  On occasion, I teach a course called History Matters for a group of higher education managers. My goals for the class include a full discussion of historical themes and ideas. Because I want students to thoroughly study the material and exchange their ideas with each other in the classroom, I have a rule —no laptop, iPads, phones, etc. When students were told my rule in advance of the class, some of them were not happy.

  Most students assume that my reasons for this rule include unpleasant experiences in the past with students misusing technology. There’s a bit of truth to that. Some students assume that I am anti-technology. There’s no truth in that at all. I love technology and try to keep up with it so I can relate to my students.

  The real reason why I ask students to leave technology at the door is that I think there are very few places in which we can have deep conversions and truly engage complex ideas. Interruptions by technology often break concentration and allow for too much dependence on outside information for ideas. I want students to dig deep within themselves for inspiration and ideas. I want them to push each other to think differently and make connections between the course material and the class discussion.

  I’ve been teaching my history class in this way for many years and the evaluations reflect student satisfaction with the environment that I create. Students realize that with deep conversation and challenge, they learn at a level that helps them keep the course material beyond the classroom.

  I’m not saying that I won’t ever change my mind about technology use in my history class, but until I hear a really good reason for the change, I’m sticking to my plan. A few hours of technology-free dialogue is just too sweet to give up.

1.Some of the students in the history class were unhappy with____

A.the course material                      B.the author’s class regulations

C.discussion topics                        D.others’ misuse of technology

2.The underlined word “engage ”in para.4 probably means ____

A.explore           B.a(chǎn)ccept            C.change           D.reject

3.According to the author, the use of technology in the classroom may ____

A.keep students from doing independent thinking

B.encourage students to have in-depth conversations

C.help students to better understand complex themes

D.a(chǎn)ffect students’ concentration on course evaluation

4.It can be inferred from the last paragraph that the author ____

A.is quite stubborn

B.will give up teaching history

C.values technology-free dialogues in his class

D.will change his teaching plan soon

 

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