相關(guān)習(xí)題
 0  18143  18151  18157  18161  18167  18169  18173  18179  18181  18187  18193  18197  18199  18203  18209  18211  18217  18221  18223  18227  18229  18233  18235  18237  18238  18239  18241  18242  18243  18245  18247  18251  18253  18257  18259  18263  18269  18271  18277  18281  18283  18287  18293  18299  18301  18307  18311  18313  18319  18323  18329  18337  151629 

科目: 來源: 題型:

Have you dreamed about       such a good chance for further education abroad?

A. there is     B. there being    C. there to be    D. there will be

查看答案和解析>>

科目: 來源: 題型:

Mr. Smith works as a government official now, but he ____________ in a middle school for 5 years.

  A. has worked    B. worked     C. had worked    D. had been working

查看答案和解析>>

科目: 來源: 題型:

The UN is _______ countries that want to increase peace.

   A. made of          B. consisted in        C. made from         D. made up of

查看答案和解析>>

科目: 來源: 題型:

The women carrying babies, get on the bus first ,________?

 A will they     B don’t you       C will you         D don’ t they

查看答案和解析>>

科目: 來源: 題型:閱讀理解

  Things similar continuously happened in Haiti and Chile.Thousands of people were

buried in the earthquake and lost their fives.What if we could have warned them? People are always trying hard to find a way of preventing building collapsing(坍塌).Better materials and technology help,but are not a solution.Just like humans,a building has its own life circle from  “birth” to “death”.If we know when a building is going to collapse,we can repair it in advance or get out before it falls.

    Now, scientists at the University of Illinois have developed a material that turns red before it breaks.The invention could be used in things like climbing ropes,or bridge supports.The secret behind the color-changing material is a type of molecule(分子).A molecule is a group of atoms held together by chemical bonds(化學(xué)鍵).Imagine you and your friends standing in a circle,holding hands.Each person stands for one atom,your hands represent the bonds,and the entire circle represents a molecule.If one person lets go of his or her hands,the molecule changes color.The research team put the molecule into a soft material.When the researchers stretched(拉長) the material:it turned bright red a few seconds before it broke into two pieces.

When they repeatedly stretched and relaxed the material,without breaking it,it only turned a little red.

The major problem is,light can get rid of the red color.When the team shone a bright light on the molecule,the broken bond was fixed,and the color disappeared.If bright fight keeps the red color from appearing,the material’s warning system will be useless.Scientists still have a lot of work to do before the color-changing molecule can be used outside the lab.

The passage mainly about

A. a way of preventing building from breaking down

B. a series of earthquakes in Haiti and Chile

C. a way of warning before buildings collapse

D. a newly-discovered structure of a molecule

According to the passage,we can conclude that

A.there are problems to solve before putting the new material to use

B.scientists have found the life circle of buildings from “birth” to “death”

C.bright fight makes the red color visible to human eyes

D.the new material is unlikely to be used in building bridges

The color-changing molecule can

A.make building materials much stronger

B.help building materials get stretched if necessary

C.prevent the earthquake from killing people

D.remind people to leave buildings before they fall

The warning system is based on the fact that

A.red color won’t show up when it meets bright fight

B.a(chǎn) material with a certain type of molecule Can turn red when stretched etched

C.a(chǎn) building has its own life circle of “birth” to “death”

D.the broken bond will fix itself when a molecule meets bright fight

查看答案和解析>>

科目: 來源: 題型:

假設(shè)你叫李華,你從報上得知某公司欲招聘一名英語翻譯,請你給該公司經(jīng)理寫一份求職信,你的個人資料如下:

  簡況:姓名,李華;年齡,23歲;身高,1.80米;健康狀況,良好;業(yè)余愛好,游泳、唱歌、跳舞。2010年即將從北京大學(xué)英語系畢業(yè)。與同學(xué)相處融洽。精通英語,尤其口語,已將多篇文章譯成英語,懂一些日語、能用日語與外賓對話。

  住址:北京市人民路1號  聯(lián)系電話:3654371

Dear manager,

________________________________________________________________________________

 Yours Truly

                                                                             Lihua

查看答案和解析>>

科目: 來源: 題型:

I will stay in the hotel          there is some news about the missing girl.

      A.in case      B.in case of  C.if only             D.unless

查看答案和解析>>

科目: 來源: 題型:

________ his pale face, we all suggested ________ to see the doctor right away.

A. Seeing; he going               B. Having seen; him go  

C. Seeing; his going                D. Seen; him going

查看答案和解析>>

科目: 來源: 題型:

作為一名中學(xué)生,和老師建立良好的師生關(guān)系是必要的。請你圍繞下面的兩個話題寫一篇英語短文,談?wù)勛约旱目捶ā?/p>

1. 你認為良好的師生關(guān)系應(yīng)該是怎樣的?

2. 如何才能建立這種關(guān)系?

注意:

1. 可以使用一些具體的實例支持你的論點;

2. 詞數(shù)100—120左右,開頭已為你寫好,不計入總詞數(shù)。

As a middle school student, it is necessary to build a good relationship with our teachers

查看答案和解析>>

科目: 來源: 題型:

You’d better carry a(n) ________ tyre in the back of your car in case it breaks down on the way.

A. extra          B. free               C. convenient         D. spare

查看答案和解析>>

同步練習(xí)冊答案