【题目】阅读下列短文,从每题所给的四个选项(A、B、C和D)中选出最佳选项。
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(引发)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,近红外线)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,紫外线)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 Califomia,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 NIRabsorbing group called onitrobenzyl(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 /span>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(易反应的)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 10 times better at absorbing NIR than is ONB and is not poisonous to cells.
【1】According to the passage,which of the following could be the best trigger?
A.Temperature change.
B.NIR light.
C.Acidity change.
D.UV light.
【2】Why is ONB unsatisfactory?
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.
【3】Which word can be used to complete the following process of changes?
A. protected
B.formed
C.exposed
D.combined
【答案】【1】B
【2】D
【3】C
【解析】【1】推理判断题。第一段第4句But triggers can come with their own risks说明引发药物释放的因素可能具有危险。Now,researchers in California have designed what could be a harmless trigger to date:shining near-infrared light(NIR)on the drug in the capsule说明NIR可能是最好的引发物。
【2】推理判断题。根据第三段最后一句But ONB is only a so-so NIR absorber,and it could be poisonous to cells when it separates from the polymer 和最后一段最后一句Bhc is 10 times better at absorbing NIR than is ONB and is not poisonous to cells.可知选D。
【3】推理判断题。根据最后一段后三句可推断选C。
科目:高中英语 来源: 题型:
【题目】Dozens of people were waiting with a camera for ______ seemed like hours, hoping to catch a glimpse of the US First Lady, Michelle Obama.
A. that B. when C. which D. what
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【题目】完成句子
【1】So far he ______________________________the paper.
到现在为止,他应该已经完成论文了。
【2】Will you __________________________________your coffee?
你愿意再往你的咖啡里加些糖吗?
【3】 This is the river ________I__________________________ swimming.
这是我过去常去游泳的小河。
【4】__________________________ you can't go to his birthday party.
真遗憾你不能去参加他的生日晚会了。
【5】________________________that he's not the right person for the job.
我已经得出结论,他不是这一工作的合适人选。
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【题目】第二节 (共5小题;每小题2分,满分10分)
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
New English Tests Are Better, but Harder
Public Speaking Training
·Get a coach
【1】 , so get help. Since there are about a billion companies out there all ready to offer you public speaking training and courses, here are some things to look for when deciding the training that's right for you.
·Focus on positives
Any training you do to become more effective at public speaking should always focus on the positive aspects of what you already do well. Nothing can hurt confidence more than being told that you aren't doing well. 【2】 , so good public speaking training should develop those instead of telling you what you shouldn't do.
【3】 If you find a public speaking course that looks as though it's going to give you lots of dos and don't walk away! Your brain is so full of what you're going to be talking about. 【4】 . As far as we're concerned, there are basically no hard and fast rules about public speaking. Your audience can be your friends.
You are a special person not a clone.Most importantly, good public speaking training should treat you as a special one, with your own personal habits. 【5】 . Your training course should help you bring out your personality, not try to turn you into someone you're not.
A. You aren't like anybody else
B. You already do lots of things well
C. Turn your back on too many rules
D. Check the rules about dos and don't
E. Whatever the presentation, public speaking is tough
F .The one thing you don't want is for them to fall asleep
G. So trying to force a whole set of rules into it will just make things worse
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【题目】短文改错(共10小题;每小题1分,满分10分)
文中共有10处错误,每句中最多有两处。错误涉及单词的增加、删除或修改。
增加:在缺词处加一个漏词符号∧,并在此符号下面写出该加的词。
删除:把多余的词用斜线\划掉。
修改:在错词下面划一横线,并在该词下面写出修改后的词。
注意:1、每处错误及其修改均仅限一词;
2、只允许修改10处,多者从第11处不计分。
I want to share with you a true story, happened a couple of days ago. One of my classmates bought a bag of snacks from a food store. A few roommates were then invited to enjoy snacks. Unluckily, all of whom got poisoned and had stomachaches with our faces pale. They were quickly sent to a nearby hospital. Doctors examined them but gave them some medicine. They were out of danger soon before taking the medicine. This accident should make us to realize the serious of the food safety problem. I strong suggest that the whole society pays more attention to food safety.
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【题目】假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。
文中共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除
或修改。
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线( \ )划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1.每处错误及其修改均仅限一词;
2.只允许修改10处,多者(从第11处起)不计分。
During the summer vacation this year, I thought I should do anything meaningful instead of staying at home, so I got a job at a KFC fast food restaurant, working there as a cleaner. I worked seven hours a day for three week. The job was hard and bored and seemed endless, which made me very tired that I nearly gave it up half way. And I went on with determination. Every day I started off for work early in the morning and got to home lately in the evening. Finally I finished the job before the new term begins. Now, I understand that work means. I think it is really successful experience.
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【题目】There is a wonderful story about a young girl who had no family and no one to love her.One day, feeling very sad and lonely, she was walking through a grassland when she noticed a small butterfly caught in a thorn (荆棘)bush.The young girl carefully released the butterfly.Instead of flying away, the little butterfly changed into a beautiful fairy.The young girl rubbed her eyes in disbelief.
"For your wonderful kindness," the good fairy said to the girl, "I will give you any wish you would like." The little girl thought for a moment and then replied, "I w ant to be happy."
The fairy leaned toward her and whispered in her ear.Then the fairy disappeared.
As the little girl grew up, there was no one in the land as happy as she.Everyone asked her secret of happiness.She would only smile and answer, "The secret of my happiness is that I listened to a good fairy when I was a little girl."
When she was very old and on her deathbed, the neighbors all gathered around her, that her unbelievable secret of happiness would die with her."Tell us, please," they begged, "Tell us what the good fairy said." The lovely old woman simply smiled and said, "She told me that everyone, no matter how secure they seemed, no matter how old or young, how rich or poor, had need of me."
【1】_____ the girl felt sad and lonely.
A.There were many friends but
B.There was nobody to love her so
C.There was nothing to do
D.Seeing the butterfly was caught
【2】Noticing the butterfly was caught by the thorn, the girl _____.
A.helped the butterfly escaped from the thorn
B.felt sorrow, but she didn't go up to help it
C.fell down on it too
D.failed to help it release from the thorn
【3】The butterfly _____ after was saved by the little girl.
A.filed away
B.still died
C.changed into a fairy
D.was more beautiful than before
【4】The only thing that the little girl wanted was _____.
A.to be rich B.to have her own parents
C.to have a lot of friends D.happiness
【5】The neighbors all gathered around the old happy woman when she was dying, because _____.
A.they loved this woman deeply and they didn't wanted her to die
B.the woman had lots of money to be shared as soon as she died
C.they wanted to know the secret of her lifetime happiness
D.they wanted to pray for her after her death
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【题目】假如你是李明,你跟你的e-pal Paul聊天,他表示学习压力很大,请你给他发封电子邮件,安慰他并给他提一些建议。
【写作内容】
将自己的问题告诉老师和同学,请求得到他们的帮助。
不要总想着考试成绩,要多想想自己在哪些方面进步了,这样会更自信。
多做运动,运动可以帮助自己缓解压力,并且有助于睡眠。
你对他的祝福。
注意:1.词数100左右;
2. 可以适当增加细节,以使行文连贯。
Dear Paul,
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Yours sincerely,
Li Ming
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