閱讀下列短文并根據(jù)所讀內(nèi)容在文章后表格中的空格里填入最恰當(dāng)?shù)膯卧~,每空格1詞(共10個(gè)小題;每小題1分,滿分10分)
Zebras have their own bug repellent(驅(qū)蟲劑)?
Eww bugs! They are so annoying! We humans are lucky that we can apply repellents to avoid nasty bites. But what’s an animal to do? They have no choice but to spend their days shooing them off with their tails, unless, of course, they are zebras, who apparently have their own automatic repellent--- their striped skin!
Scientists had originally thought that the reason why the animal had developed the black and white lines was to help protect itself from predators in the African savannah, because the stripes make it difficult to single out one zebra that is traveling with a herd.While that may be true, the theory has never been tested or proven. Now the experts have another---that the stripes have evolved to repel the annoying horse flies that not only feed off their blood, but also, transmit dangerous germs into the bodies of these innocent animals.
The study was performed by a team of Swedish scientists. One of the clues that got them thinking along these lines was the fact that darker horses got bitten more often than light-colored or white ones.
The fact that zebras are born black and only develop strips as they grow older made the scientists theorize that the stripes may be something the animals have developed to make themselves less attractive to flies.
To test if this may be the case, they painted some boards at a horse-infested horse farm in Budapest with patterns of black and white stripes of varying widths and applied a layer of glue on them. What they noticed was that the places where the black and white stripes were at their narrowest (similar to what zebras have) attracted the fewest flies. They achieved similar results when they painted horses with black and white zebra-like stripes.
While the research are not sure why this may be the case, they believe it may be something to do with the way insects operate---horseflies are attracted to horizontally polarized light(偏振光); since white does not reflect it, white horses are luckier than black ones. But zebras seem to be the luckiest of all. When the researchers measured the polarized light reflected from real zebra skins, they found that it matched light patterns that were the least attractive to horseflies.
While this theory does make logical sense, nobody is 100 percent sure that it is really true, given that it has never been tested on a real zebra. If it is true, it does raise the question of why a horse, a close relative of the zebra has failed to develop stripes. The researchers believe that this could be because there are more horseflies in Africa, where zebras reside, then anywhere else in the world.
   Title
         Zebras have their own bug repellent?
Reasons for zebras developing their strips
Original belief
With the black and white lines, one zebra is difficult to single out while traveling with a herd, thus ___小題1:___ it from its enemies.
New theory
Zebras, residing in Africa where there are most horseflies in the world ,have developed strips to avoid being___小題2:____ .
 
A study
Researchers
A team of scientists from ___小題3:____
 
____小題4:____
To test if strips are developed to make zebras less attractive to flies.
 
Clues
*White or light-colored horses are less __小題5:___ to get bitten than dark ones.
*Zebras develop strips as they grow older though born black .
 
Method
*Some boards at a horse farm are painted with patterns of black and white stripes variously ___小題6:___ , a layer of glue applied on them
*Measured the polarized light reflected from real zebra skins
 
_____小題7:___
*The places where the black and white stripes were similar to the ___小題8:___zebras have attracted the fewest flies
*Strips of zebras matched light patterns that were the least attractive to horseflies
Principle of zebras’ black and white strips repelling the flies
Horizontally polarized light, which white does not reflect, ____小題9:___ to horseflies.
Conclusion
____小題10:___tested on real zebras, the theory isn’t definitely true.

小題1:protecting
小題2:bitten / attacked
小題3:Sweden
小題4:Purpose
小題5:likely
小題6:wide
小題7:Findings
小題8:ones
小題9:appeals
小題10:Unless

試題分析: 人類可以利用各種方法抵御蚊蟲的叮咬,那么動物怎么做呢?科學(xué)家發(fā)現(xiàn)斑馬的黑白條紋可能是它們用來抵御蚊蟲叮咬的方法。
小題1:詞形轉(zhuǎn)化題:根據(jù)第二段的句子:Scientists had originally thought that the reason why the animal had developed the black and white lines was to help protect itself from predators in the African savannah, because the stripes make it difficult to single out one zebra that is traveling with a herd.可知科學(xué)家原來認(rèn)為斑馬長著黑白的條紋是為了保護(hù)自己免受敵人的進(jìn)攻,protect改成protecting做伴隨狀語。
小題2:句意理解題:根據(jù)第二段的句子:Now the experts have another---that the stripes have evolved to repel the annoying horse flies that not only feed off their blood, but also, transmit dangerous germs into the bodies of these innocent animals. 可知科學(xué)家現(xiàn)在又發(fā)現(xiàn)斑馬長著黑白的條紋是為了保護(hù)自己免受叮咬或進(jìn)攻, bitten / attacked。
小題3:詞形轉(zhuǎn)化題:根據(jù)第三段的句子:The study was performed by a team of Swedish scientists.可知研究人員是來自瑞典的:Sweden。
小題4:歸納詞:根據(jù)右邊的內(nèi)容:To test if strips are developed to make zebras less attractive to flies.可知這是這項(xiàng)調(diào)查的目的:Purpose。
小題5:句意理解題:根據(jù)第三段的句子:One of the clues that got them thinking along these lines was the fact that darker horses got bitten more often than light-colored or white ones.可知白色或淺色的馬比黑色的馬被咬的可能性要小,所以填likely。
小題6:詞形轉(zhuǎn)化題:根據(jù)第五段的句子:To test if this may be the case, they painted some boards at a horse-infested horse farm in Budapest with patterns of black and white stripes of varying widths and applied a layer of glue on them. 可知科學(xué)家在板上畫了不同寬度的黑白條紋。用形容詞做定語wide。
小題7:歸納詞:右邊的內(nèi)容是這次調(diào)查的結(jié)果,填Findings。
小題8:指代題:根據(jù)第五段的句子:What they noticed was that the places where the black and white stripes were at their narrowest (similar to what zebras have) attracted the fewest flies 可知這里用ones代替stripes。
小題9:考查詞組:根據(jù)第六段的句子:horseflies are attracted to horizontally polarized light(偏振光); since white does not reflect it,可知attracts改成詞組:appeals to。
小題10:句意理解題:根據(jù)最后一段的句子:While this theory does make logical sense, nobody is 100 percent sure that it is really true, given that it has never been tested on a real zebra.可知如果不在真的斑馬身上做實(shí)驗(yàn),這個(gè)結(jié)果都不一定是真實(shí)的,填Unless。
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