Many people know the names Alexander Graham Bell and Thomas Edison. However, most people

Many people know the names Alexander Graham Bell and Thomas Edison. However, most people don’t know the name of the man who invented the television, Philo Farnsworth.

Philo Farnsworth was born in 1906 and grew up on a potato farm. As a boy, he loved to learn about science, and he read a lot of science books. When he was only thirteen years old, he drew a picture of a machine that could send pictures as radio sends sounds. He got the idea from the way the potatoes were planted in the field. The potatoes grew in long lines, side by side. This made a shape(形状) in Philo’s mind. This shape helped Philo think of a way to send the TV picture onto a piece of glass. But he was poor, so Philo could not try to make his idea into a machine at that time.

Later, Philo worked at many different jobs. He worked with trees. He worked on broken radios. He worked on trains. He also worked as a street cleaner. At last, two rich men heard about his idea for television, and they gave him the money to make it. On September 7th, 1927, they watched Philo test the machine he built. When Philo turned on the machine, a small line could be seen on the glass. Philo said, “There you have it, electric television.”

Later, a big company, RCA, said they had made the first television. Philo had to spend a lot of money on lawyers to fight them. Finally, he won. Then, World War II started in 1939. During the war, Philo spent a lot of money helping the US army instead of building up his television company. After the war, other bigger, richer companies started making televisions. In the end, Philo had to sell his company.

26. Why does the author mention Bell and Edison at the beginning of the text?

ATo remember both of them.                               BTo prove their wisdom.

CTo introduce the topic of the text.                          DTo explain their relationships.

27. According to the text, how old was Philo when he finished his invention of TV?

A27 years old.                                                        B21 years old.

C33 years old                                                  D39 years old

28. Philo Farnsworth got the idea for TV from ______.

Athe radio                                                              Bscience books

Cpotato fields                                                        Da machine

29. The underlined part “building up” in the last paragraph probably means “______”.

Astarting                                                          Bselling

Cputting up                                                     Dmaking bigger

30. Which is the correct order of the following events?

 a. Two rich men gave Philo money to do experiments.

 b. Philo sold his own company.

 c. Philo beat RCA in law.

 d. Philo fixed broken radios.

 e. Philo showed his invention to others.

Ad, a, e, c, b                                                    Be, d, c, b, a

Cd, c, e, b, a                                                    Da, c, b, d, e

答案

CBCDA

相关题目

选出下列加点成语使用正确的一项     A.入夜,月色溶溶
选出下列加点成语使用正确的一项     A.入夜,月色溶溶,水天寥廓,我们或坐在树下谈笑自若,或坐在船上叩舷高歌,或立于小石桥上对月凝思。
函数y=lg(3-4x+x2)的定义域为M,x∈M时,求f(x)=2x+2-3×4x的最值.
函数y=lg(3-4x+x2)的定义域为M,x∈M时,求f(x)=2x+2-3×4x的最值.
下列句中加点词语使用不正确的一项是(   )(2分) A. 我
下列句中加点词语使用不正确的一项是(   )(2分) A. 我登上钟罗山,俯瞰费县的山山水水,景色显得格外秀美。 B. 一味地照搬他人的经验来发展本
读图12,完成40-41题。 40.下列数据,可能为正常年份A地年降
读图12,完成40-41题。 40.下列数据,可能为正常年份A地年降水量的是 A.1000mm         B.200mm          C.680mm          D.880mm 41.B地的
 下列物质露置在空气中一段时间,质量减少的是(     
 下列物质露置在空气中一段时间,质量减少的是(      )    A.生石灰     B. 浓硫酸      C.石灰石    D.浓盐酸
当肋骨间的肌肉和膈肌舒张时,气体经过的途径是( ) A.
当肋骨间的肌肉和膈肌舒张时,气体经过的途径是( ) A.外界气体→食管→肺 B.肺→支气管→气管→口腔→外界 C.外界气体→鼻→咽→喉→气管→
(本大题共6分)等边△ABC中,点P在△ABC内,点Q在△ABC外,
(本大题共6分)等边△ABC中,点P在△ABC内,点Q在△ABC外,且∠ABP=∠ACQ,BP=CQ,问△APQ是什么形状的三角形?试说明你的结论.
    假定英语课上老师要求同桌之间交换修改作文,请你修
    假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中 共有10处语言错误,每句中最多有两处。每处错误仅涉及一个

最新题目