题目

阅读理解 Many of us are disgusted at spiders or afraid of them. We don't like to touch them or go near them, and if we see one in our house, we'd better watch out. But do you know that a spider's natural color may inspire a new shade of blue textiles and offer a solution to the glare on the screen of your phone when you're out in the sun? This color is a shade of blue, inspired by the cobalt blue tarantula (钴蓝狼蛛) - a species of spider that is native to the rainforests of southeast Asia. What surprised scientists who observed the eight-legged furry spider was that its color did not change at all even when viewed from different angles. A team of scientists, led by Bill Hsiung from the University of Akron in Ohio, have been studying tarantulas for some time. Blue is a rare color in the animal kingdom, so the researchers set out to find the exact nature of this blue. They found that the outer body of the tarantula is covered with tiny crystalline (晶体的) structures. These tiny structures act like a mirror and when light strikes them, they reflect only one particular wavelength of light - blue. This kind of natural color is referred to as the "structural color". Usually, when colors are viewed from different angles, they appear different because of how light is reflected. This is because of a phenomenon known as iridescence (彩虹色). However, the blue color produced by tarantulas appears the same from all angles. Scientists find that it is the tiny crystal structures on the tarantula's body arranged in a flower-like shape that reduce iridescence. Scientists have known about structural colors for a while, but they have not seen them used for dye.  With a clearer understanding of how "structural colors" work, scientists can now create a pigment (Ⅱ) similar to the tarantula blue to dye textiles and other products. Watch out for the tarantula blue-a color that may soon take the fashion industry by storm! （1） What is special about the cobalt blue tarantula? A . Its body color is unchangeably blue. B . its legs look crystal clear in the sun. C . Its smell is naturally disgusting. D . Its fur can be made into textiles. （2） What's the author's purpose in writing Paragraph 4? A . To introduce the tarantula's body structures. B . To show the phenomenon of color iridescence. C . To explain the principle of the structural color. D . To discuss the importance of reflection angles to colors. （3） What can be a suitable title for the text? A . A color inspired by a spider B . The development of blue textiles C . A spider with structural colors discovered D . The cobalt blue tarantula-a rare species 答案： A C A

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