Question

At the age of twelve years, the human body is at its most vigorous（強(qiáng)壯的）. It has yet to reach its full size and strength. At this age the chance of death is least. Earlier, we were babies and young children, and consequently weaker; later, we shall undergo a progressive loss of our vigor and resistance which, though unnoticed at first, will finally become so steep that we can live no longer, however well we look after ourselves, and however well society and our doctors look after us.
　　This decline in vigor with the passing of time is called ageing. It is one of the most unpleasant discoveries which we all make that we must decline in this way, that if we escape wars, accidents and disease we shall eventually "die of old age", and that this happens at a rate which differs little from person to person, so that there are heavy odds in favor of our dying between the ages of sixty-five and eighty. Some of us will die sooner, a few will live longer---on into a ninth or tenth decade. But the chances are against it_, and there is an actual limit on how long we can hope to remain alive, however lucky and energetic we are.
　　Normal people tend to forget this process unless and until they are reminded of it. We are so familiar with the fact that man ages, that people have for years assumed that the process of losing vigor with time was something self-evident, like the cooling of a hot kettle or the wearing-out of a pair of shoes. They have also assumed that all animals, and probably other organisms such as trees, or even the universe itself, must in the nature of things "wear out". Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; and mechanical systems like a wound watch, or the sun, do in fact run out of energy according to the second law of thermodynamics (熱力學(xué)). But these are not analogous to what happens when man ages. A run-down watch is still a watch and can be rewound. An old watch, by contrast, becomes so worn and unreliable that it eventually is not worth mending. But a watch could never repair itself---it does not consist of living parts, only of metal, which wears away by friction. We could, at one time, repair ourselves---well enough, at least, to overcome all but the most instantly fatal illnesses and accidents.　　

67. Which of the following statements is INCORRECT?

A. Our first twelve years represent the peak of human development.
B. People usually are unhappy when reminded of ageing.
C. Normally only a few of us can live to the eighties and nineties.

D. People are usually less likely to die at twelve years old.　　

68. The word "it" in the last sentence of Paragraph Two refers to ________.
A. remaining alive until 65.

B. remaining alive after 80.

C. dying before 65 or after 80. 　　

D. dying between 65 and 80.　　

69. What is ageing?　　

A. It is usually a phenomenon of dying at an old age.　　

B. It is a fact that people cannot live any longer.　　

C. It is a gradual loss of vigor and resistance.　　

D. It is a stage when people are easily attacked by illness.　　

70. What do the examples of watch show?　　

A. Normally people are quite familiar with the ageing process.　　

B. All animals and other organisms undergo the ageing process.　　

C. The law of thermodynamics functions in the ageing process.　　

D. Human's ageing process is different from that of mechanisms.

Answer 1

 A B C D