7.The new book_______in the factory these days is mainly intended for children.(  )
A.printingB.to printC.being printedD.to be printed

分析 這些天工廠正在印刷的新書主要是為孩子們?cè)O(shè)計(jì)的.

解答 答案:C.
分析句子結(jié)構(gòu)可知,print與the new books之間是邏輯上的動(dòng)賓關(guān)系,應(yīng)用過去分詞形式,排除A和B;又根據(jù)these days可知,此處表示這些天都在印這些新書.而D項(xiàng)表示將來,可排除.be intended for為…而設(shè)計(jì);故C項(xiàng)正確.

點(diǎn)評(píng) 對(duì)于非謂語動(dòng)詞要分清其具體的用法,搞清楚主被動(dòng)關(guān)系,以及表示的時(shí)間關(guān)系,然后結(jié)合句意作出選擇.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

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: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:選擇題

3.Jessica had intended to go bungee jumping,and on second thoughts,she        the plan.(  )
A.was cancelingB.cancelsC.canceledD.has canceled

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

2.In Asia,there are special competitions where kites have complex designs and are fitted with instruments that make musical sounds as the wind blows through them.Although all kites have a similar structure (結(jié)構(gòu)),they are widely different in size and shape.Kite-fighting competitions are also held,in which competitions us their kites to attack and bring down their opponents'(對(duì)手)kites or cut their strings(線).
For more than 15years,the Big Wind Kite Factory has been giving kite-making and kite flying classes for the children on an island in Hawaii.In its kite-making lessons,students can make kites in as little as 20minutes!Children as young as four years old can learn how to fly a kite.Jonathan Socher and his wife Daphne started the kite factory in 1980.their kites are made of nylon(尼龍).Their designs are Hawaiian themes created by Daphne.The designs are cut out of the nylon with a hot knife that seals the edges and then fastened directly onto the kite.
The kite that is used to give lessons is regular diamond kite with a rainbow pattern.The difference between this kite and the ones they make during the lessons is that it is a two-string controllable kite.Big Wind employees fly the kite and for a few minutes show students how pulling on one line and then on the other controls the direction the kite goes in.Then the controls are given to the students.
Jonathan insists that it is not necessary to make a huge impressive kite to have fun making and flying kites.Even the simplest structure can work,and can give hours of fun.Go on,give it a try!

68.Which of the following is true according to the text?D
A.A hot knife is used to iron the nylon.
B.Children never fly kites on their own in flying lessons.
C.Kite strings must not be cut in kite-fighting competitions.
D.Daphne designs kites for the Big Wind Kite Factory.
69.What is different about the kite used for flying lessons?A
A.It has two strings.        B.It is simple in design
C.It has a rainbow pattern.  D.It is shaped like a diamond.
70.According to Jonathan,what do you need to have fun with kites?B
A.A large kite.        B Any type of kite.
C.A complex structure   D.A kite that impresses others.
71.What is mainly described in the text?A
A.A kite factory         B.Kite-flying lessons.
C.Special competitions.    D.The kite-making Process.

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

12.The book has helped me greatly in my daily communication,especially at work ________ a good impression is a must.(  )
A.whereB.whenC.asD.which

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(xué)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>>

科目:高中英語 來源: 題型:選擇題

4.This sweater fits me,but I can't afford to buy ______.I have to choose ______ which is cheap enough for me.( 。
A.it; thatB.that; itC.it; oneD.that; the one

查看答案和解析>>

科目:高中英語 來源: 題型:選擇題

5.I have a tight budget for the trip,so I'm not going to fly        the airlines lower ticket prices.( 。
A.onceB.ifC.afterD.unless

查看答案和解析>>

同步練習(xí)冊(cè)答案