47 Which of the following statements about Charles Goodyear is true?
(A)He lived in Brazil.
(B)He invented rubber.
(C)He was a salesperson.
(D)He majored in chemistry.

答案：登入後查看
統計： A(18), B(109), C(383), D(72), E(0) #1871163

詳解 (共 3 筆)

#3006687

In 1839, a salesman was experimenting with (A)(B)a newproduct from Brazil called rubber. It could be used to make erasers, but it melted at high temperatures, and broke whenit was cold. The inventor tried mixing it with different chemicals, but nothing worked until he accidentally dropped iton a hot stove. Heat made the rubber strong and flexible. Thanks to Charles Goodyear’s accident, we now have rubbertires for our cars, and rubber soles for our shoes.

(A)He lived in Brazil. 是新產品來自巴西
(B)He invented rubber. 不是他發明的
(C)He was a salesperson. 

(D)He majored in chemistry.文中未提及


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#3022917

有句古老的谚语说：“需要是发明之母。”“但如果你看看现实生活中的科技故事，你会发现并不是所有的发明都是计划好的。有些是意外！在20世纪40年代，一位名叫珀西斯宾塞的科学家正在为美国军方开发雷达系统。有一天，在他的实验室里，他注意到他口袋里的一块巧克力已经变得非常柔软，即使在房间里不热，也会融化。他站在一台叫做磁控管的机器旁边。很快，他做了一个实验，在磁控管旁边放了一些玉米粒。一分钟后，他吃了爆米花。这就是微波炉发明的方式。

“偶然的发明”已经发生了很长一段时间。1839年，一名销售人员正在试验一种来自巴西的新产品——橡胶。它可以用来做橡皮擦，但在高温下融化，在寒冷的时候就会破裂。这位发明家试着将它与不同的化学物质混合，但直到他不小心把它放在一个热火炉上，才起作用。热使橡胶坚固而灵活。多亏了查尔斯古德伊尔的事故，我们现在为我们的汽车安装了橡胶轮胎，还有我们的鞋的橡胶鞋底。

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#3685494
An old proverb諺語，格言 says that “Necessity is the mother of invention創造, 發明.”
But if you look at real-life stories of technology,you’ll see that not all inventions were planned決定, 計劃，方案. Some of them were accidents!
In the 1940s, a scientist named Percy Spencer珀西·勒巴朗·斯賓塞 was working to develop radar雷達 systems for the U.S. military.
One day, in his laboratory實驗室；實驗大樓, he noticed that a chocolate bar in his pocket had gotten very soft and melted even though雖然⋯⋯可是 it wasn’t hot in the room.
He was standing next to a machine called a magnetron磁控管. Quickly, he did an experiment實驗；試驗；試用, putting some kernels植物部分, （堅果可食用的）仁，核 of corn next to the magnetron磁控管. In a minute, he had popcorn. And that was how the microwave oven微波爐 was invented. 

“Accidental inventions” have been happening for a long time.
In 1839, a salesman was experimenting with a newproduct from Brazil called rubber合成橡膠, 橡皮.
It could be used to make erasers, but it melted at high temperatures, and broke when it was cold.
The inventor tried mixing it with different chemicals, but nothing worked until he accidentally dropped It on a hot stove（用於取暖的）爐，火爐.
Heat made the rubber strong and flexible. Thanks to Charles Goodyear’s accident, we now have rubbertires橡膠輪胎 for our cars, and rubber soles橡膠鞋底 for our shoes.
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