Last fall,beekeepers from states with warm climates began to report a sudden loss of honey bees.Losses were reported in twentyfour states and spread to Canada.Today,some beekeepers say thirty percent to ninety percent of their honey bees are gone.Food price could go up as a result.And some beekeeping businesses have failed.

Many kinds of plants,trees and grasses need bees to pollinate them.Bees gather nectar from flowers during this process.The liquid gives them food and material to make honey.As the bees land on flowers,their bodies pick up and drop off particles of pollen(花粉).Most flowering plants need pollination to reproduce.

Honey bees can die during the winter.But few dead bees have been found this time.Instead,the bees seem to have disappeared.Experts call the condition “colony collapse disorder”.

Agriculture Department official Caird Rexroad said the colony collapse disorder threatens about fifteen billion dollars worth of the country's farm economy.Mr.Rexroad commented at a hearing of a House of Representatives agriculture subcommittee.

Mr.Rexroad said the cause of the sudden loss of bees was not clear.The number of honey bees had already fallen before the colony collapse disorder began.

Experts say the varroa mite is at least partly responsible for the earlier decrease in honey bees.The mite is a tiny creature that feeds on honey bees.It may play a part in colony collapse disorder by carrying bee viruses.Or the problem may be caused by other disease and weather conditions.

Diana CoxFoster of Pennsylvania State University is part of the scientific group.Ms.CoxFoster says the nation needs honey bees that can defend themselves better against disease and insects.The recent mapping of most of the honey bees' genes offers the hope of a stronger honey bee some day.

1.Some people have failed in beekeeping businesses because ________.

A.they want to make more money by doing something else

B.the climates were too warm to raise bees last fall

C.too many bees have disappeared for no reason

D.more and more people are beginning to raise bees

2.Which of the following statements is TRUE according to this passage?

A.It is normal that some bees die in the cold season.

B.The plants can't live without bees at all.

C.Many bees have died because of the bad weather.

D.Researchers have found the reason of the death of bees.

3.The passage is mainly to tell us that ________.

A.the honey bees are important to plants,trees and grasses

B.many Americans are surprised at the loss of honey bees

C.strong honey bees are in great need in America

D.something has happened to American honey bees

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語 來源:2014-2015學(xué)年甘肅武威市高二上模塊終結(jié)性檢測(cè)英語試卷(解析版) 題型:單項(xiàng)填空

It sounds like something is wrong with the car’s engine.______, we’d better take it to the garage immediately.

A. Otherwise B. If not

C. But for that D. If so

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年寧夏回族自治區(qū)銀川一中高三第二次模擬英語試卷(解析版) 題型:完形填空

I have forgotten the name of the old lady, who was a customer on my newspaper route. Yet it in my memory that she taught me a lesson in that I shall never forget.

On a winter afternoon, a friend and I were stones onto the roof of the old lady's house near her garden. The was to observe how the stones changed to missiles as they to the roof’s edge and fell into the yard like comets(彗星)falling from the . I found myself a perfectly smooth rock and threw it. The stone was too , however, so it slipped from my hand as I let it go and headed straight for a small . At the sound of broken glass, we knew we were in . We ran faster than any of our stones flew off her roof.

I was too about getting caught that first night to be about the old lady with the broken window in winter. ,a few days later, when I was sure that I hadn't been discovered, I started to feel for her trouble. She still greeted me with a smile each day when I gave her the newspaper, but I was no longer able to act when seeing her.

I decided that I would save my paper delivery money, and in three weeks I had the seven dollars that I thought would the cost of her window and sent it to her in an envelope.

The next day, I the old lady her paper. She thanked me for the paper and gave me a bag of biscuits she had made herself. I thanked her and ate the biscuits I continued my route.

After several cookies, I felt an envelope and pulled it out of the . When I opened the envelope, I was . Inside were the seven dollars and a short note that ,“I'm proud of you.”

1.A. fails B. fades C. impresses D. remains

2.A. forgiveness B. value C. honesty D. gratefulness

3.A. collecting B. putting C. throwing D. placing

4.A. subject B. theme C. topic D. object

5.A. shot B. rolled C. got D. dropped

6.A. earth B. ocean C. sky D. universe

7.A. smooth B. square C. heavy D. beautiful

8.A. ceiling B. door C. chimney D. window

9.A. danger B. trouble C. surprise D. comfort

10.A. scared B. excited C. disappointed D. confused

11.A. frightened B. depressed C. puzzled D. concerned

12.A. However B. Therefore C. Besides D. Furthermore

13.A. honored B. guilty C. pleased D. pressed

14.A. proud B. active C. comfortable D. energetic

15.A. include B. increase C. cover D. mend

16.A. handed B. turned C. passed D. sent

17.A. because B. where C. since D. as

18.A. paper B. pocket C. bag D. wallet

19.A. annoyed B. surprised C. amused D. delighted

20.A. attached B. said C. told D. wrote

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年四川雅安中學(xué)高二4月月考英語試卷(解析版) 題型:語法填空

Last year, my brother and I went to Miami for a vacation. Some of my friends who had been there before said1.___ was a wonderful holiday destination. Before we went, we had planned for months. When the day came, we were ready.

After our plane landed, we went to the hotel. We had made our reservation six months_2.____ (early), but the man at the front desk said there had been a mistake. We 3._____(tell)that our rooms hadn’t been reserved for that week, 4.___ for the week after. I didn’t understand 5.___ this would happen. What’s worse, the hotel had been fully booked. When we were wondering what to do, the manager came out. She was6._____(surprise)helpful. She apologized for the mistake and gave us a spare VIP room on 7.____ top floor. We had never stayed in such an 8.____(amaze) room, and we weren’t charged extra.

The next day, my brother and I went to the beach9.____ we watched some people play volleyball. We got a little10.____(sunburn),but the day had been so relaxing that we didn’t mind.

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年黑龍江大慶鐵人中學(xué)高一4月英語試卷(解析版) 題型:書面表達(dá)

假設(shè)你是新華中學(xué)的李華。 請(qǐng)給校報(bào)英文版主編 Mr. Smith 發(fā)一封郵件,建議開通一個(gè)“Class Report” 專欄,以報(bào)道各班級(jí)新聞(包括班級(jí)活動(dòng),好人好事以及先進(jìn)管理經(jīng)驗(yàn)),鼓勵(lì)學(xué)生報(bào)道。 內(nèi)容需包括:1. 說明寫此郵件的目的; 2. 對(duì)該報(bào)贊賞; 3. 說明開辦該欄目的好處。

注意:1.可適當(dāng)增加細(xì)節(jié),使行文連貫;

2.詞數(shù)100左右。(開頭和結(jié)尾已給出,不計(jì)入總詞數(shù)。)

參考詞匯:

先進(jìn)管理經(jīng)驗(yàn):advanced management experience

Dear Mr. Smith,

I am writing to ____________________________________________________________

__________________________________________________________________________

__________________________________________________________________________

__________________________________________________________________________

I’m looking forward to your reply.

Yours,

Li Hua

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年黑龍江大慶鐵人中學(xué)高一4月英語試卷(解析版) 題型:單項(xiàng)填空

I used to go camping a lot, so it wasn’t the first time I ______ in a tent.

A. will sleep B. would sleep

C. had slept D. have slept

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年黑龍江大慶鐵人中學(xué)高一4月英語試卷(解析版) 題型:單項(xiàng)填空

________ the houses were knocked down in the earthquake.

A.A great many B.The number of

C.A great many of D.A great deal of

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年浙江省六校高三3月聯(lián)考英語試卷(解析版) 題型:完形填空

“Wanted: Violin

Can’t pay much

Call … ”

Why did I notice that? I wondered, since I rarely looked at the classified ads. I laid the paper on my lap and closed my eyes, remembering what had during the Great Depression, when my family to make a living on our farm. I, too, had wanted a violin, but we didn‘t have the .

When my older twin sisters began showing an interest in music, Harriet Anne learned to play Grandma‘s upright piano, Suzanne turned to Daddy‘s violin, simple tunes soon became 24 melodies as the twins played more and more. in the rhythm of the music, my baby brother danced around while Daddy hummed(哼唱)and Mother whistled. I just .

When my arms grew enough, I tried to play Suzanne‘s violin, I loved the beautiful sound drawn across the strings. Oh, how I wanted one! But I knew it was the question.

One evening as the twins played in the school orchestra, I closed my eyes tight to capture the picture firmly in my . “Someday, I‘ll sit up there.” I vowed(發(fā)誓) .

Unfortunately, it was not a year. At harvest the crops did not bring as much as we had hoped. I, however, couldn‘t any longer to ask, “Daddy, may I have a violin of my own?”

“Can‘t you use Suzanne‘s?”

“I‘d like to be in the orchestra, too, and we can‘t use the same violin at the same time.”

Daddy‘s face looked . That night, and many following nights, I heard him God in our family devotions: “… and Lord, Mary Lou wants her violin.”

One evening we all sat around the table. The twins and I studied. Mother sewed and Daddy wrote a letter to his friend, George Finkle, in Columbus. Mr.Finkle, Daddy said, was a fine violinist.

As he wrote, Daddy read of his letter out loud to Mother. Weeks later I he‘d written one line he didn‘t read aloud: “Would you watch for a for my third daughter? I can‘t 40 much, but she enjoys music. And we‘d like her to have her own instrument.”

1.A. managed B. promised C. struggled D. forced

2.A. luck B. money C. choice D. hope

3.A. while B. since C. after D. before

4.A. soft B. fluent C. gentle D. lovely

5.A. Picked out B. Caught up C. Taken on D. Called for

6.A. shouted B. laughed C. listened D. cried

7.A. long B. tough C. old D. slim

8.A. far from B. next to C. out of D. along with

9.A. dream B. hand C. life D. mind

10.A. faithfully B. silently C. frequently D. patiently

11.A. hopeless B. stable C. good D. difficult

12.A. stand B. help C. wait D. risk

13.A. both B. ever C. either D. still

14.A. angry B. sad C. pale D. weak

15.A. demand B. inform C. commit D. remind

16.A. favourite B. private C. own D. individual

17.A. parts B. lines C. contents D. purposes

18.A. heard B. conveyed C. discovered D. observed

19.A. musician B. favor C. gift D. violin

20.A. owe B. order C. charge D. pay

查看答案和解析>>

科目:高中英語 來源:2014-2015學(xué)年浙江寧波市十校高三3月聯(lián)考英語試卷(解析版) 題型:單項(xiàng)填空

— How do you like the trip to Tai Wan?

— We _____ there for a week. It’s a fantastic place and well worth visiting again.

A. had stayed B. have stayed

C. stayed D. will stay

查看答案和解析>>

同步練習(xí)冊(cè)答案