Part Ⅱ Reading Comprehension
Directions: There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.
Questions 21 to 25 are based on the following passage:
What has the telephone done to us, or for us, in the hundred years of its existence? A few effects suggest themselves at once. It has saved lives by getting rapid word of illness, injury, or fire from remote places. By joining with the elevator to make possible the multi-story residence or office building, it has made possible — for better or worse — the modern city. By bringing about a great leap in the speed and ease with which information moves from place to place, it has greatly accelerated the rate of scientific and technological changes and growth in industry. Beyond doubt it has seriously weakened if not killed the ancient art of letter writing. It has made living alone possible for persons with normal social impulses; by so doing, it has played a role in one of the greatest social changes of this century, the breakup of the multi-generational household. It has made the war chillingly more efficient than formerly. Perhaps, though not provably (可证实)，it has prevented wars that might have arisen out of international misunderstanding caused by written communication. Or perhaps — again not provably — by magnifying and extending irrational personal conflicts based on voice contact, it has caused wars. Certainly it has extended the scope of human conflicts, since it impartially disseminates (传播) the useful knowledge of scientists and the nonsense of the ignorant, the affection of the affectionate and the malice (恶意) of the malicious.
21. What is the main idea of this passage?
A) The telephone has helped to save people from illness and fire.
B) The telephone has helped to prevent wars and conflicts.
C) The telephone has made the modern city neither better nor worse.