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英语四六级考试

2009年12月英语四级考试模拟训练及答案(二)

2009年12月英语四级考试模拟训练及答案,独立演练,自测之后再对答案效果好。

  Passage Three

  When a sleepy driver has trouble with keeping his eyes on the road and gets too close to another car, an alarm sound will warn the driver. If nothing is done, the car will automatically come to a stop and in this way prevent an accident. This is a new device which will soon be tested in an experimental car in Japan. The computer warning system keeps track of a driver’s condition by monitoring his heartbeat with signals transmitted from a band around his wrist. The wrist band records the driver’s pulse which measures the heartbeat. Each pulse rate pulse in the wrist sends a signal to the computer. By analyzing the pulse rate, the computer can determine whether a driver is druck, sleeping or ill. Devices in other parts of the car can also tell the computer if the car is too close to another vehicle or is moving dangerously. The computer will sound the alarm when a problem arises, and will automatically stop the car if the driver ignores the warning.

  Questions 33 to 35 are based on the passage you have just heard.

  33.Why is a computer system installed in an experimental car ?

  34.What does the computer system do first when a problem arises ?

  35. What is special about the new computer system ?

  Section C

  Directions: In this section, you will hear a passage three times, when the passage is read for the first time, you should listen carefully for its general idea .When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information .For these blanks, you can either use the exact words you have just heard or write down the main points in your own words. Finally, when the passage is read for the third time, you should check what you have written.

  Any man-made (36) vehicle lauched into (37) space will move in (38) accordance with the same laws that (39)govern the motions of the planets about the sun , and the moon about the (40) earth.

  Prior to the time of Copernicus, man (41)generally accepted the belief that the earth was the center of the solar system. But efforts to explain the (42)motion of the planets on this assumption failed. Copernicus pointed out that the difficulties in explaining observations of (43)planetary movement disappeared if one assumed that the sun was the center of the solar system, and that the planets revolved about the sun.

  Years later, Galileo took up the defense of Copernicus theory. With experiments such as the dropping of two objects of different size and weight from the Learn Tower of Pisa, (44)he started the thinking that led to our current understanding of the laws of motion.

  In the early seventeenth century, Johannes Kepler formulated laws that described the motions of the planets about the sun. (45)The most important were: first, each planet revolves about the sun in an orbit that is an ellipse; second, the imaginary line from the center of the sun to the center of a planet (called the radius vector) (46)sweeps over equal areas of the ellipse in equal periods of time.

  Part Ⅳ Reading Comprehension (Reading in Depth)

  Section A

  47.D 此处需要一个动词。本句叙述申请专利的程序:申请人申请专利时需要对发明进行具体描述,然后将描述和样品一同提交政府官员,故填submit一词。

  48.O 此处需要填入一个形容词和beneficial并列作表语。此句介绍政府官员签发专利的条件是原创性和有用性,故填original。

  49.A 空格前为情态动词could,所以此处需要填入一个动词原形。此处和or后面的use them themselves意义上是对应的。根据常识,申请人获得专利后,专利当然可以自己使用,也可以转让给其他人,故填license“许可,特许”。

  50.K 此处需要填入一个动词原形。政府为一项发明签发专利后,当然不能再为同样的创意签发专利,故填issue“签发,发行”。

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