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Alexander Graham Bell
The telephone was invented by a Scottish teacher of the deaf named Alexander Graham Bell. His great invention was really amazing. It is a very great use for the mankind in the world.
Alexander Graham Bell was born in Edinburgh, Scotland, in the nineteenth century. In 1871, he came to the United States. Several members of his family did a great deal to encourage him in the field of science. He began his experiments by trying to invent the harmonic telegraph.
Through an accident, he invented the telephone. On 10th March 1876, Thomas A. Watson, Bell’s assistant, became the first person ever to hear words spoken over the telephone. At that time, Bell and Watson were testing a crude telephone transmitter. Watson was waiting for the test message at the end of the wire in another room. Suddenly, Bell spilled battery solution on his clothes. He called out his assistant, “Mr. Watson, come here, I want you!”
Then, Watson rushed into the room and shouted, “Mr. Bell, I heard every word you said – distinctly!” The telephoned had worked. The damage to Bell’s clothes was forgotten. The receiver and transmitter of Bell’ first telephone could be used interchangeably.
Afterwards, he exhibited his instrument at the Centennial Exposition at Philadelphia in June, 1876. The public at first showed little interest, but scientists greeted it with enthusiasm.
The first money ever paid for the lease of a commercial telephone was paid in May, 1877. By August of that year about 800 telephones were in use.
The first telephone line was installed between Boston and Somerville, Massachusetts in April 1877. The first commercial telephone exchange was opened by George W. Coy on 28th January 1878, in New Haven, Connecticut.
Bell’s life was dedicated to a science. His very great invention is very useful for the world communication i.e. telephone.
Choose the correct answer!
1. When did Bell invent telephone?
a. In the twentieth century
b. In March 1878
c. From 1871 – 1876
d. After 5 years living in the United States
2. Which of the following statement is NOT TRUE according to the text?
a. Telephone is very useful for people’s communication around the world.
b. Bell’s invention was firstly displayed at the Centennial Expositon.
c. Since the beginning, the public were interested with Bell’s invention.
d. The first commercial telephone exchange was opened in January 1878.
3. “The public at first showed little interest, but scientists greeted it with enthusiasm.” (Paragraph 5) the underline word refers to…
a. The first telephone installation
b. Bell’s dedication to science
c. Bell’s instrument
d. The telephone wire
Teks disadur dari Detik-detik Ujian Nasional SMP
- Alexander Graham Bell menemukan Telepon setelah 5 tahun tinggal di US. Lihat paragraf 2 yang menyatakan pada tahun 1871 ia datang ke US. Di paragraf 3 disebutkan ia berhasil menemukan telepon pada tahun 1876. Jadi jawaban yang benar adalah D.
- Jawaban yang tidak benar adalah C. Masyarakat tertarik dengan penemuan Bell sejak semula.
- Kata it dalam kalimat tersebut merujuk pada Bell's instrument. Jawaban yang benar adalah C
Fadli Eha – Sekolahoke.com