大学英语四级考试阅读学习笔记(6)_第3页

　23. The word "bested" (Line 3, Para. 5) most probably means ________.
　　A) beat
　　B) envied
　　C) caught up with
　　D) made the best of
　　注：词汇题，根据第5段末句的意思可推断为A选项。
　　24. Which of the following statements is true?
　　A) Active smokers in general performed better than deprived smokers.
　　B) Active smokers responded more quickly than the other subjects.
　　C) Non-smokers were not better than other subjects in performing simple tasks.
　　D) Deprived smokers gave the slowest responses to the various tasks.
　　注：C选项是第一个实验结果deprived smokers and non-smokers performed equally well
　　Questions 16 to 20 are based on the following passage:
　　16. According to the author, the sonar system of bats
　　is an example of the idea that ____.
　　A) this is the age of technological triumphs
　　B) modern machines are inefficient
　　C) living mechanisms are often more efficient than man -made machines
　　D) artificial imitations are always less efficient than living mechanisms
　　17. The author suggests that the sonar system of bats ____.
　　A) was at the height of its perfection 50 million years ago
　　B) is better than man-made sonar because it has had 50 million years to be be refined
　　C) should have been discovered by man many years ago
　　D) is the same as it was 50 million years ago
　　18. Echo location in this article means the _____.
　　A) location of echoes
　　B) ability to determine where an echo comes from
　　C) scientific term for sound waves
　　D) ability to locate unseen objects by echoes
　　19 This article was written to illustrate ____.
　　A) the deficiencies of man-made sonar
　　B) the dependence of man upon animals
　　C) that we are living in a machine age
　　D) that the sonar system of bats is remarkable
　　20. The following is the main point of the article:____
　　A) A bat will catch hundreds of insects in a single hour.
　　B) There is a perfection in nature which sometimes can not be matched by man's creative efforts.
　　C) The phrase "blind as a bat" is valid.
　　D) Sonar and radar systems of man are inefficient.