5．應(yīng)該鼓勵高中學生參加各種各樣的社會活動以拓寬他們的眼界．（horizon）Highschoolstudentsshouldbeencouragedtoparticipateinavarietyofsocialactivitiestoexpandtheirhorizons．．

分析 High school students should be encouraged to participate in a variety of social activities to expand their horizons．

解答 High school students should be encouraged to participate in a variety of social activities to expand their horizons．
這是表達的對事物的一種看法，所以用一般現(xiàn)在時．
根據(jù)句意"應(yīng)該鼓勵高中學生參加"可知用被動語態(tài)更能夠形象的表達出句子的意思，be encouraged to do sth．被鼓勵去做某事；participate in參加；expand their horizons拓寬眼界．

點評 a variety of的同義表達：
a variety of=a range of=a lot of=lots of=a diversity of=a good/great many=quantities of

練習冊系列答案
相關(guān)習題

科目：高中英語 來源： 題型：閱讀理解

11．Shakespeare's Birthplace and Exhibition of Shakespeare's World
  Welcome to the world-famous house where William Shakespeare was born in l564 and
where he grew up The property（房產(chǎn)）remained in the ownership of Shakespeare's family until 1806．The House has welcomed visitors traveling from all over the world，for over 250 years．
 
◆Enter through the Visitors'Centre and see the highly-praised exhibition Shakespeare's World，a lively and full introduction to the life and work of Shakespeare
◆Stand in the rooms where Shakespeare grew up
◆Discover examples of furniture and needlework from Shakespeare's period
◆Enjoy the traditional（傳統(tǒng)的）English garden，planted with trees and flower mentioned in the poet's works
 
⊙The Birthplace is within easy walking distance of all the car parks shown on the map；nearest is Windsor Street（3 minutes'Walk）
⊙The House may present difficulties but the Visitors'Centre，its exhibition．a(chǎn)nd the garden are accessible （可進入的）to wheelchair users
⊙The Shakespeare Coffee House（opposite the Birthplace）

56．How much is the admission for a family of two grown-ups and two children？B
A．￡9.80．       B．￡12.00．        C．￡14.20．        D．￡16.40．
57．Where is the nearest parking place to Shakespeare's Birthplace？C
A．Behind the exhibition hall．
B．Opposite the Visiturs'Centre．
C．At Windsor Street．
D．Near the Coffee House．
58．A wheelchair user may need help to enterA．
A．the House      
B．the garden    
C．the Visitors'Centne     
D．the exhibition hall．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

12．能否抵御網(wǎng)絡(luò)游戲的誘惑是擺在中學生面前的一道難題．（It）It is a difficult problem for high school students whetherthey can resist the temptation of online games．．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

13．Medical drugs sometimes cause more damage than they cure．One solution to this problem is to put the drugs inside a capsule，protecting them from the body-and the body from them-until they can be released at just the right spot．There are lots of ways to trigger （引發(fā)） this release，including changing temperature，acidity，and so on．But triggers can come with their own risks-burns，for example．Now，researchers in California have designed what could be a harmless trigger to date：shining near-infrared light （NIR，近紅外線） on the drug in the capsule．
The idea of using light to liberate the drug in the capsule isn't new．Researchers around the globe have developed polymers （聚合物） and other materials that begin to break down when they absorb either ultraviolet （UV，紫外線） or visible light．But tissues also readily absorb UV and visible light，which means the drug release can be triggered only near the skin，where the light can reach the capsule．NIR light largely passes through tissues，so researchers have tried to use it as a trigger．But few compounds （化合物） absorb NIR well and go through chemical changes．
That changed last year when Adah Almutairi，a chemist at the University of California，San Diego，reported that she and her colleagues had designed a polymer that breaks down when it absorbs NIR light．Their polymer used a commercially available NIR-absorbing group called o-nitrobenzyl （ONB）．When they catch the light，ONB groups fall off the polymer，leading to its breakdown．But ONB is only a so-so NIR absorber，and it could be poisonous to cells when it separates from the polymer．
So Almutairi and her colleagues reported creating a new material for capsules that's even better．This one consists of a long chain of compounds called cresol groups linked in a polymer．Cresol contains reactive（易反應(yīng)的） components that make it highly unstable in its polymeric form，a feature Almutairi and her colleagues use to their advantage．After polymerizing the cresols，they cap each reactive component with a light-absorbing compound called Bhc．When the Bhcs absorb NIR light，the reactive groups are exposed and break the long polymer into two short chains．Shining additional light continues this breakdown，potentially releasing any drugs in the capsule．What's more，Almutairi says，Bhc is 10times better at absorbing NIR than is ONB and is not poisonous to cells．

63．According to the passage，which of the following could be the best trigger？B
A．Temperature change．
B．NIR light．
C．Acidity change．
D．UV light．
64．Why is ONB unsatisfactory？D
A．It breaks down when it absorbs NIR light．
B．It falls off the polymer and triggers drug release．
C．It has not come onto the market up till now．
D．It is not effective enough and could be poisonous．
65．Which word can be used to complete the following process of changes？C
A．protected         
B．formed      
C．exposed      
D．combined．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

20．老師的贊賞給了我很大的鼓舞，這對一名學生而言非常寶貴．（which）The teacher's compliment（s）gave me（filled me with）a great encouragement（inspiration），which is so precious for a student．．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

10．傳統(tǒng)的火車票購買方式已經(jīng)被網(wǎng)絡(luò)購買方式所取代了．（replace）Thetraditionalway ofbuyingtraintickets hasalreadybeenreplaced bytheonethroughtheInternet．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

17．believe（　�。�
A．lieB．patientC．dietD．thief

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

6．Harvard researchers have created a tough，low-cost，biodegradable （可生物降解的） material inspired by insects'hard outer shells．The material's inventors say it has a number of possible uses and someday could provide a more environmentally friendly alternative to plastic．The material，made from shrimp （'蝦） shells and proteins produced from silk，is called"shrilk．"It is thin，clear，flexible and strong．
A major benefit of the material is its biodegradability．Plastic's toughness and flexibility represented a revolution in materials science during the 1950s and'60s．Decades later，however，plastic's very durability （耐用性） is raising questions about how appropriate it is for one-time products such as plastic bags，or short-lived consumer goods，used in the home for a few years and then cast into a landfill where they will degrade for centuries．What is the point of making something that lasts 1，000years？
Shrilk not only will degrade in a landfill，but its basic components are used as fertilizer（肥料），and so will enrich the soil．
Shrilk has great potential，the inventors said．Materials from which it is made are plentiful in nature，found in everything ranging from shrimp shells，insect bodies to living plants．That makes shrilk low cost，and its mass production possible should it be used for products demanding a lot of material．
Work on shrilk is continuing in the lab．The inventors said the material becomes flexible when wet，so they're exploring ways to use it in wet environments．They're also developing simpler production processes，which could be used for non-medical products，like for computer cases and other products inside the home．They're even exploring combining it with other materials，like carbon fibers，to give it new properties．

66．Paragraph I of the passage is mainly about shritk'sC．
A．remarkable design
B．interesting name
C．major features
D．basic elements
67．What has become a concern about plastic？A
A．Using it properly．
B．Producing it cheaply．
C．Developing its properties quickly．
D．Evaluating its contributions fairly．
68．According to the inventors，shrilk has great potential partly becauseD．
A．it can help plastic degrade
B．it can be found in living things
C．its mass production has been realized
D．its raw materials are abundant in mature
69．What are the inventors doing in the lab？B
A．Replacing carbon fibers with shrilk．
B．Testing ahrilk's use in wet conditions．
C．Making shrilk out of used household goods．
D．Improving shrilk's flexibility for medical purposes．
70．Which of the following can be the best title for the passage？D
A．Recent Progress in Environmental Protection
B．Benefits of Insects in Scientific Research
C．The Harm of One-time Products
D．A Possible Alternative to Plastic．

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

7．In 1991，high in the mountains of Europe，hikers made a discovery：a dead man partly frozen in the ice．However，the police investigation soon became a scientific one．Carbon dating indicated that the man died over 5，300years ago．Today he is known as the Iceman and has been nicknamed"?tzi"for the ?tztal Alps where he was found．Kept in perfect condition by the ice，he is the oldest complete human body on the earth．
Scientists think he was an important person in his society．An examination of his teeth and skull tells us that he was not a young man．His arms were not the arms of a laborer．His dagger（匕首） was made of stone，but he carried a copper axe．This implies wealth，and he was probably from the upper classes．We know he could make fire，as a fire-starting kit was discovered with him．Even the food he had eaten enabled scientists to reason exactly where in Italy he lived．
But why did the Iceman die in such a high and icy place？There have been many theories．Some said he was a lost shepherd．Others thought he was killed in a religious ceremony．Over the years since he was found，tiny scientific discoveries have led to great changes in our understanding of the story of the Iceman．The newest scientific information indicates that he was cruelly murdered．"Even five years ago，the story was that he fled up there and walked around in the snow and probably died of exposure，"said Klaus Oeggl，a scientist at the University of Innsbruck in Austria．"Now it's all changed．It's more like a…crime scene．"
In June 2001，an X-ray examination of the body showed a small dark shape beneath the Iceman's left shoulder．It was the stone head of an arrow．It had caused a deadly injury that probably killed him very quickly．In 2003，an Australian scientist discovered the blood of four different people on the clothes of the Iceman．Did a bloody fight take place before his murder？Injuries on his hand and head indicate that this may be true．One theory，put forward by archeologist （考古學家） WalterLeitner，says that the Iceman's murder was the end of a fight for power among his people．However，this idea is certainly debatable．

66．What does"?tzi"refer toA．
A．the oldest perfectly preserved human body
B．the most famous tourist attraction?tztal Alps
C．a(chǎn)n important discovery by the police of Europe
D．the person living in ?tztal Alps for a long time
67．After the examination of the Iceman，scientists believe thatC．
A．he died at an early age
B．he made a fire-starting kit
C．he had a higher social status
D．he was born at a village in Italy
68．According to Klaus Oeggl，the Iceman died fromD．
A．a(chǎn) serious diseaseB．a(chǎn) snow disaster
C．a(chǎn) religious faithD．a(chǎn) terrible murder
69．What is the passage mainly talking aboutC？
A．The life of ancient people in the AlpsMountains．
B．The cruel religious life of the Europeans in the past．
C．The discovery andpossiblecause of death of the Iceman．
D．The application of carbon dating technology to the Iceman．

查看答案和解析>>

同步練習冊答案