( ) 9. Most people on this island are recreational fishers, and ，fishing forms an actual part of their leisure time.
A. accidentally B. obviously C. purposefully D. formally
9. B考查副詞詞義辨析。accidentally偶然地; obviously明顯地;purposefully有目的地；formally正式地。句意：這個島上的大多數人都是把釣魚當作消遣。很明顯，釣魚成了他們主要的休閑活動。
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4. They considered the issue ，so they paid no attention to it. (importance)
他們認為這個問題不太重要，因此他們并不關注。
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10. In response to the audience' s great demand, the play in the theatre twice a week. (put)
應觀眾的強烈要求，這部戲將會在這個劇院每周上演兩次。
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27. A Frenchman who lost his arms and legs successfully swam across the Channel，a challenge he for two years. (prepare)
一位失去了雙臂和雙腿的法國人成功地游過了這個海峽，完成了一個他準備了兩年的挑戰。
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( ) 4. The photos on the wall my mother of those happy old days when a large family
lived together.
A. inform B. approve C. remind D. retell
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4. It was not until the clock struck 12 on TV firecrackers to celebrate the New Year's coming. (set)
直到電視上敲12點鐘，他才燃放鞭炮來慶祝新年的到來。
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Most people know Alexander Graham Bell invented the telephone. But not many know about another talking device (equipment) he invented just four years later，in 1880. He called the device the photophone.
"Photophone" comes form the Greek words for "light" and "sound". The photophone did not use electricity to carry sound over wires between two people. That' s what a telephone does. Instead,
the photophone used a beam of sunlight traveling through the air. With his invention, Bell could actually transmit(傳遞)human speech on a beam of light. To do so，he spoke close to a thin mirror that was reflecting sunlight. The vibrations(顫動)of his voice caused the mirror to vibrate，and the vibrating mirror caused the light to vibrate. The vibrating light hit a light-sensitive cell in a receiver placed some distance away. The cell changed the light patterns into electrical signals. Earphones changed the signals back into sounds.
Bell believed that his idea of talking on a beam of light would prove to be important. He often called the photophone his greatest invention. Even though the photophone depended on a source of energy that was not constant一the sun―Bell wasn' t a bit discouraged. He felt sure that people would one day talk using beams of light.
Two much more recent developments made Bell' s dream come true. In 1960 ，a scientist built the laser. A laser produces a highly concentrated beam of light. Shortly afterward, other scientists developed a new kind of optical fiber. The optical fiber is a glass thread. The new fiber could carry light beams long distances―as far as several miles.
( ) 1. According to Bell's own opinion, is his greatest invention.
A. telephone B. optical fiber C. photophone D. laser
( ) 2. What does "That" refer to in the underlined sentence?
A. Using a beam of sunlight traveling through the air.
B. Using electricity to carry sound over wires between two people.
C. Transmitting human speech on a beam of light.
D. Light and sound.
( ) 3. Which statement is true about Bell，s invention of photophone?
A. The photophone depends on a constant source of energy.
B. The photophone is based on the invention of the telephone.
C. Earphones are used to change light into sounds.
D. The laser and the optical fiber are helpful for Bell' s invention.
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5. Not after going on a diet for three months，Jane felt very upset. (lose)
節食三個月沒有減輕體重，Jane感到非常沮喪。
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1. It was James Watt，s observation of steam from a kettle the idea of the steam engine. ( birth)
James Watt觀察到從茶壺飄出的蒸汽，這讓他產生了蒸汽機的想法。
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