题目内容
阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。
A man came to the USA from another country. After__1.___(settle) down at an island , he went into a cafeteria to get something ___2.____(eat). He sat down at an empty table and waited for someone to take his order, but nobody did. ___3.__(final), a woman with a tray full of food sat down opposite him and told him____4.__ the cafeteria worked.
“Start out at that end ,” she said .”Just go along the line and pick out what you want. At_____5.____ other end they’ll tell you how much you have to pay.”
“ I was ___6.____(surprise) how everything worked in the USA,” the man told his friend.” Life’s a cafeteria there. You can get anything you want as long as you are willing to pay the price. You can even get success,_____ 7.____ you will never get it if you wait for someone to bring it to you. You have to get up and get it _8.___(you).”
You can’t change the inevitable. The only thing you can do___9.____(be) to control your attitude. Once you reach that point in life, happiness and ___10.____(satisfy) can ‘t be too far away.
English very well, and it was fun to communicate with them,” he said, adding that some “passengers” were quite talkative.任务型阅读
阅读下列短文并根据所读内容在文章后表格中的空格里填入最恰当的单词，每空格1词
Zebras have their own bug repellent(驱虫剂)?
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 (食肉动物)in the African savannah(大草原), 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 stripes 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(寄生的) 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 why zebras develop their strips | Original belief | With the black and white lines, one zebra is difficult to single out while traveling with a herd, thus ___1.__ it from its enemies. |
New theory | Zebras, residing in Africa where there are most horseflies in the world have developed strips to ___2.___ being attacked. | |
A study | Researchers | A team of scientists from ___3.___ |
_4.___ | To test if strips are developed to make zebras less attractive to flies. | |
Clues | *White or light-colored horses are less __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 ___6.__ , a layer of glue applied on them. *Measured the polarized light reflected from real zebra skins. | |
_7.___ | *The places where the black and white stripes at the narrowest were similar to the __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, ___9.__ to horseflies. | |
Conclusion | ___10.___tested on real zebras, the theory isn’t definitely true. | |