2009年12月英語四級考試模擬訓(xùn)練及答案(二)

　　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 此處需要一個動詞。本句敘述申請專利的程序：申請人申請專利時需要對發(fā)明進(jìn)行具體描述，然后將描述和樣品一同提交政府官員，故填submit一詞。

　　48.O 此處需要填入一個形容詞和beneficial并列作表語。此句介紹政府官員簽發(fā)專利的條件是原創(chuàng)性和有用性，故填original。

　　49.A 空格前為情態(tài)動詞could，所以此處需要填入一個動詞原形。此處和or后面的use them themselves意義上是對應(yīng)的。根據(jù)常識，申請人獲得專利后，專利當(dāng)然可以自己使用，也可以轉(zhuǎn)讓給其他人，故填license“許可，特許”。

　　50.K 此處需要填入一個動詞原形。政府為一項發(fā)明簽發(fā)專利后，當(dāng)然不能再為同樣的創(chuàng)意簽發(fā)專利，故填issue“簽發(fā)，發(fā)行”。