4.What is the author likely to write about after the last paragraph?
A.Problems with the book.
B.Brookss life experience.
C.Death of the characters.
D.Brookss translation skills.
答案 A [判断推理题。最These problems partly involve Brooks’s attempt to translate his tale into science.可推知,接下去作者主要论及作品存在的问题。]
Passage 3 (2017·重庆)
话题:水上行走
词数:288
The idea of being able to walk on water has long interested humans greatly.Sadly,biological facts prevent us ever accomplishing such a thing without artificial aid-we simply weigh too much,and all our mass pushes down through our relatively small feet,resulting in a lot of pressure that makes us sink.
However,several types of animals can walk on water.One of the most interesting is the common basilisk Basilicus basilicus,a lizard (蜥蜴) native to Central and South America.It can run across water for a distance of several meters,avoiding getting wet by rapidly hitting the waters surface with its feet.The lizard will take as many as 20 steps per second to keep moving forward.For humans to do this,wed need huge feet that we could bring up to our ears in order to create adequate“hitting”.
But fortunately there is an alternative:cornflour.By adding enough of this common thickening agent to water (and it does take a lot),you can create a“non-Newtonian”liquid that doesn’t behave like normal water.Now,if the surface of the water is hit hard enough,particles(粒子) in the water group together for a moment to make the surface hard.Move quickly enough and put enough force into each step,and you really can walk across the surface of an adequately thick liquid of cornflour.
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