分析 本文是說明文.文章介紹了仿生學應用的三個例子.
解答 32.C.細節(jié)理解題.根據(jù)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種子后獲取靈感,發(fā)明了魔術貼,故選C.
33.A.推理判斷題.根據(jù)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,璧魚皮的紋理使鯊魚游得更快.由此可推測,運動員穿著 模擬了該紋理的泳衣也應該能游得更快,33名 游泳冠軍有28名穿著該泳衣也能說明這一點,故選A.
34.D.細節(jié)理解題.根據(jù)倒數(shù)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,鷹眼睛里一 種叫黃油的物質讓它們有敏銳的視力,故選D.
35.B.標題歸納題.文章介紹了仿生學應用的三 個例子,通過這幾個例子我們可以看出,仿生學的應用就像魔法一樣,能解決我們碰到的問題 或啟發(fā)人們設計出滿足某種需求的產(chǎn)品.故選B.
點評 考查學生的細節(jié)理解和推理判斷能力.做細節(jié)理解題時一定要找到文章中的原句,和題干進行比較,再做出正確選擇.在做推理判斷題時不要以個人的主觀想象代替文章的事實,要根據(jù)文章事實進行合乎邏輯的推理判斷.
科目:高中英語 來源: 題型:填空題
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科目:高中英語 來源:黑龍江省哈爾濱市2016-2017學年高二下學期期中考試英語試卷 題型:單詞拼寫
1.The town has changed beyond __________(認出) 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 __________(允許).
4.Please come at your __________(方便), and you will be welcome.
5.Most __________(申請人) know they have little chance of getting a visa.
6.Necessity is the mother of __________(發(fā)明).
7.My eyes slowly grew __________(適應,習慣) to the dark.
8.Envy is a __________(普遍的,全體的) weakness of people.
9.I __________(贊同) 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 __________(歧視) was being won.
12.His casual clothes were not __________(適合的,恰當?shù)模ゝor such a formal occasion.
13.He was a __________(代表) of Russia to the UN.
14.A rare snowstorm __________(橫掃,掃過) across the region yesterday.
15.Without her timely assistance, we would never have won the __________(競爭,競賽).
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科目:高中英語 來源:四川省內江市2017屆高三第五次模擬考試英語試卷 題型:閱讀理解
B vitamins(維生素)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(表觀遺傳)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(劑量)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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