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Light is one of the important factors that influence the clock.
A．Y
B．N
C．NG
答案
更多“Light is one of the important factors that influence the clock.A．YB．NC．NG”相关的问题
第1题
According to the passage, American meals at one time were ______.
A．heavy and meat based
B．delicious and light
C．expensive to prepare
D．luxurious
第2题
A.seat-recliner
B.call
C.reading light
D.entertainment
第3题
In the sentence "To keep fit, one needs to eat light food, do enough exercises, and have adequate sleep." ,there is a parallel of（).
A.verb+noun
B.verb
C.noun
D.infinitive
第4题
A.He looked silly with only one leg inside the window.
B.The torch light made him look very foolish.
C.He knew the policeman wouldnt believe him.
D.He realized that he had made a mistake.
第5题
A．He looked silly with only one leg inside the window.
B．He knew the policeman wouldn't believe him.
C．The torch light made him look very foolish.
D．He realized that he had made a mistake.
第6题
A.moves; concentrates
B.moving; concentrating
C.moving; concentrated
D.moved; concentrates
第7题
A．To ask if you may smoke.
B．To go to special sections for smokers.
C．To smoke before him.
D．To offer him one before you light up a cigarette.
第8题
听力原文： Light travels at a speed that is about a million times faster than the speed of sound. In one second, light travels about 300, 000 km, but sound travels only about 334 meters. You can get some idea of this difference by watching the start of a race. If you stand some distance away from the starter, you can see smoke come from his gun before the sound reaches your ears.
This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light that you can see from it tonight started to travel towards you about four years ago at a speed of nearly 20 million km per minute. In some cases, the light from one of tonight's stars started on its journey to you before you were born. Thus, if we want to be honest, we cannot say, "the stars are shining tonight.” We have to say, "the tars look pretty. They were shining four years ago, but their light has only just reached the earth."
(30)
A．Light speed is millions of times faster than sound speed.
B．Light speed is a million times slower than sound speed.
C．Light speed is about millions of times faster than sound speed.
D．Light speed is about a million times faster than sound speed.
第9题
听力原文： Thomas Edison was born in Milan, Ohio on February 11,1847. He was not an ordinary person. He was one of the greatest inventors in the history. (29)The phonograph, the light bulb, the movie camera, and sewing machine are just some of his many inventions that helped change the world.
Thomas did not go to school. His mom taught him at home. When he was twelve, he got his first job at the train station as a train boy selling candy and newspapers. He loved books and he spent all his money on them. One day while trying to catch a train, a trainman reached and grabbed him by the ears. While pulling Edison up, something cracked in his ears and right after that he began to go deaf.
When Thomas had made enough money years later, he wanted to buy a laboratory. He paid a group of scientists to think of inventions and see if the inventions would work. That setup worked so well that other companies did this too. (31)Now today every company and university in the whole world has a research department, and it all began with Edison's research group.
He is most famous for the invention of the electric light bulb. (30) He had burned himself with candles so many times when he read; he wanted a way to see without a candle. It took him just over a year to invent a practical light bulb. Edison founded the Electric Light Company in 1878.
In his seventies he still worked sixteen hours a day, and was one of the most famous men in America. By the time he died at West Orange, New Jersey on October 18,1931, he had created over 1,000 inventions.
(30)
A．Telephone and the light bulb.
B．Phonograph and movie camera.
C．Sewing machine and refrigerator.
D．Movie camera and telephone.
第10题
A．These products are cheaper and more persuasive.
B．They are abiding by a kind of new contract.
C．The manufacturer of the products urges them to buy.
D．Buying such products has become a vogue.
