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Color blindness in human beings is a strange thing to explain. In a single eye there are millions of very small things called “cones”. These help us to see in a bright light and to tell difference between colors. There are also millions of “rods”, but these are used for seeing when it is nearly dark. They show us shape but no color. Some insects have favorite colors. Mosquitoes like blue but do not like yellow. A red light will not attract insects, but a blue lamp will. In a similar way human beings also have favorite colors. Yet we are lucky. With the aid of the cones in our eyes we can see many beautiful colors by day, and with the aid of the rods we can see shapes at night. One day we may even learn more about the invisible colors around us. 49. According to the passage, with the help of the cones, we can_______. A. tell different shapes B. see in a weak light C. kill mosquitoes D. tell orange from yellow 50. Why do some people say it is safer to be driven by a woman? A. Women are more careful. B. There are fewer color-blind women. C. Women are fonder of driving than men. D. Women are weaker but quicker in thinking. 51. Which of the following statements about the color-blind is true? A. Not all of them have the same problem in recognizing colors. B. None of them can see deep red. C. None of them can tell the difference between blue and green. D. All of them see everything in shades of green. 52. We can attract and kill mosquitoes by using a ______. A. red light B. yellow light C. blue light D. green light . C At first all films were in black and white, but in 1932 the first color film was made. This proved as unpopular as talking films had done in the late 1920’s. It was not until 1938 that a full-length color film was made, and the success of this film made producers everywhere change from black and white to color. This first full-length color film was translated into ten different languages and made Hollywood the main center of film industry。 In the early days of the cinema, other countries also had film industries. Very good films were made in Sweden, Britain, Russia and France. However, because Hollywood had so much money to spend, it kept its position as the world’s most important film center. Film actors went to America because they knew they could get a lot of money for every film they made. In 1918 Charlie Chaplin received $5 each day. However, life was not always easy for the film actors. Newspapermen followed them everywhere, and after Charlie Chaplin married for the fourth time he became so unpopular with the American public that he had to leave the country and live in Europe. 53. Which of the following is correct? A. People liked color film as soon as it was made. B. At first color films were not long. C. Color films were at first silent. D. Talking films were all color films. 54. The first full-length color film was made ______. A. in Hollywood B. in Sweden C. by Charlie Chaplin D. in Britain 55. Life was sometimes difficult for film actors because_______. A. films often cost huge amount of money to make B. they had a long way to go before they became famous C. sometimes films lose money D. they could not get away from newspapermen 56. Talking films _______. A. were not successful until the late 1920’s B. were unpopular when first made C. were as popular as black and white films D. were popular but the color film was not D “Do you believe in life after death?” “Yes, sir.” “Well, then that makes everything just fine,” the boss went on.” About an hour after you left yesterday to go to your grandfather’s funeral (葬礼), he dropped in to see you.” (责任编辑：admin) |