What do butterfly wings have to do with

题型:阅读理解

问题:

What do butterfly wings have to do with computer screens? What do birds have to do with high speed trains?

These may sound like strange things to put together. But scientists, inventors, and designers are doing just that. They are learning from nature to create new technology.

The word biomimicry (仿生学) combines two words: biology and mimicry. So people using biomimicry try to use examples in nature to design new technology.

Biomimicry is not a new idea. People have been studying nature for hundreds of years. Leonardo DaVinci used birds as models to invent his flying machine. And when the Wright Brothers made the first successful airplane, they also studied birds. In 998, Janine Benyus, a natural science writer and teacher, wrote a book about biomimicry. To develop her interest in the subject, Janine Benyus started the Biomimicry Institute.

The Biomimicry Institute is a non-profit organization. It brings together scientists, designers, inventors and many other people. It offers classes to teach people biomimicry. It provides money for people to research and test new technologies. And it wants all people, from children to adults, to think about new ways to learn from nature.

People involved with the Biomimicry Institute believe that biomimicry can help solve many of the world’s problems. Often, new technologies can harm nature, but this is not true for biomimicry. Let’s look at some examples.

Butterflies have colorful wings because light shines off them in a special way. Scientists want to copy these same ways to make light shine off computers. They hope this will make for more colorful screens.

Another example of biomimicry is the bullet train. It travels at speeds of over 250 kilometers per hour! But it had a problem: it made too much noise!

Through the observation of birds, scientists thought about a kind of bird, the kingfisher(翠鸟). The kingfisher can dive into water without making any noise because of the shape of its beak(喙). Researchers thought that if they could design the front of the train like this beak, the train would be quieter. Well, it worked!

小题1:The first paragraph is written to_____.

A.start a discussion

B.make a brief summary

C.introduce the topic of the text

D.test readers' knowledge on science小题2:Why did Janine Benyus set up the Biomimicry Institute?

A.To honor the Wright Brothers.

B.To show her recent inventions.

C.To gather talented people for her research.

D.To explore the link between nature and technologies.小题3:We know from the text that the Biomimicry Institute _____.

A.earns a lot by giving classes on biomimicry

B.tells people about their technologies

C.gives free support to scientists

D.teaches children about birds小题4:The author gives the two examples at the end of the text to show _______.

A.biomimcry works harmoniously with nature

B.the fast development of modern technology

C.how biomimcry changes our life

D.how nature inspires scientists小题5:What’s the main idea of the text?

A.Biomimicry is widely used in the world.

B.People copy nature to create new technologies.

C.The Biomimicry Institute was set up for science.

D.Birds play an important part in new technologies.

考点:科教类阅读
题型:阅读理解

肝豆状核变性主要辅助检查是什么?

题型:阅读理解

下列关于我国证券交易所的说法,不正确的有( )。

A.证券交易所是证券买卖双方公开交易的场所

B.证券交易所本身不买卖证券

C.证券交易所可以决定证券价格

D.证券交易所是以盈利为目的的法人

题型:阅读理解

在为学(不管学什么)的道路上,______来说,并不存在可以______的“捷径”;但是,我们却______避免或者少走弯路。这就需要有人给初学者指点门径,告诉他们正确的学习方法和步骤。 填入划横线部分最恰当的一项是( )。

A.一般 一蹴而就 应该

B.目前 一帆风顺 能够

C.总体 平步青云 尽量

D.客观 唾手可得 必须

题型:阅读理解

主动脉瓣血流速度加快不见于下列哪项()

A.主动脉瓣狭窄

B.主动脉瓣关闭不全

C.甲状腺功能亢进

D.左心衰竭

E.二尖瓣关闭不全

题型:阅读理解

装置分段试压的目的可对设备的严密性进行检查。

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