分析 本文是说明文.文章介绍了仿生学应用的三个例子.
解答 32.C.细节理解题.根据第二段中的UBderthe microscope,he discovered that these seeds had hooks on them,so they could easily stick to qothi^or hair.He copied this idea and invented Velcro?可知,George de Mestra在研宄了一些植物的种子后获取灵感,发明了魔术贴,故选C.
33.A.推理判断题.根据第三段中的TheSpeedo Fastskin% a controversial swimsuit,was seen at the Beijing Olympics and worn by 28 of the 33 gold medal winners.The technology is based on the rough patterns on a shark's skin,which allows the shark to swim faster 可知,璧鱼皮的纹理使鲨鱼游得更快.由此可推测,运动员穿着 模拟了该纹理的泳衣也应该能游得更快,33名 游泳冠军有28名穿着该泳衣也能说明这一点,故选A.
34.D.细节理解题.根据倒数第二段中的 Scientists studied how eagles see things clearly.They discovered that a substance called yellow oil in their eyes does the trick 可知,鹰眼睛里一 种叫黄油的物质让它们有敏锐的视力,故选D.
35.B.标题归纳题.文章介绍了仿生学应用的三 个例子,通过这几个例子我们可以看出,仿生学的应用就像魔法一样,能解决我们碰到的问题 或启发人们设计出满足某种需求的产品.故选B.
点评 考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.
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科目:高中英语 来源:黑龙江省哈尔滨市2016-2017学年高二下学期期中考试英语试卷 题型:单词拼写
1.The town has changed beyond __________(认出) since I was last here.
2.He lost his __________(胃口,食欲) because of his sorrow.
3.He entered the room without teacher’s __________(允许).
4.Please come at your __________(方便), and you will be welcome.
5.Most __________(申请人) know they have little chance of getting a visa.
6.Necessity is the mother of __________(发明).
7.My eyes slowly grew __________(适应,习惯) to the dark.
8.Envy is a __________(普遍的,全体的) weakness of people.
9.I __________(赞同) of your trying to make some money, but please don’t neglect your study.
10.The pattern of injuries is __________(一致的,吻合的) with an attack with a knife.
11.It seemed as if battle against racial __________(歧视) was being won.
12.His casual clothes were not __________(适合的,恰当的)for such a formal occasion.
13.He was a __________(代表) of Russia to the UN.
14.A rare snowstorm __________(横扫,扫过) across the region yesterday.
15.Without her timely assistance, we would never have won the __________(竞争,竞赛).
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B vitamins(维生素)may offer some protection against the effect of air pollution,a new study suggests.
The scientists say the effect is real but stress the limitations of their work.Follow-up studies are urgently needed, they say,in heavily polluted cities like Mexico.
According to the World Health Organization (WHO),over 90% of the world's population live in heavily-polluted areas.The one of the pollutants that is considered the most dangerous is very fine particulate matter, referred to as PM2.5.At around 1/30 the width of a human hair,PM2.5 can go deep into the human lung and contribute to lung and heart health problems in the young and old.
Scientists have long suspected that PM2.5 causes what are termed epigenetic(表观遗传)changes in our cells that can damage our health.Now in this new human trial,an international team of scientists wanted to see if exposure to concentrations of PM2.5 could be mitigated by daily B vitamins.
Ten volunteers were tested initially exposed to clean air and their basic responses were measured.The same volunteers were later tested with large doses(剂量)of B vitamins while exposed to air containing high levels of PM2.5.The researchers found that a four-week B vitamin intake limited the PM2.5 effect by between 28-76% at ten gene locations.They found a similar reduction in effect on the mitochondrial DNA,the parts of cells that produce energy.
However,the researchers caution that their study,while observing a real effect,has limitations.As well as the small number of participants,there was little information on the size of the B vitamin dose that caused the response.
1.What is the main idea of the text?
A. B vitamins may fight against PM2.5.
B. PM2.5 can lead to epigenetic changes.
C. Further studies should be done on PM2.5.
D. Exposure to PM2.5 is more and more serious.
2.Which can replace the underlined word "mitigated" in Paragraph 4?
A. measured B. ignored
C. reduced D. observed
3.How many limitations does the text mention about the new study?
A. 2. B. 3.
C. 4. D. 5.
4.How does the writer of the text like the new study?
A. He believes it deeply. B. He criticizes it strongly.
C. He thinks it needs testing again. D. He shows no opinion about it.
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