Where do pesticides fit into the picture of environmental disease We
have seen that they now pollute soil, water and food, that they have the
power to make our stream fishless and our gardens and woodlands silent 41 ______
and birdless. Man, however much he may like to pretend the contrary, is
part of nature. Can he escape a pollution is now so thoroughly 42 ______
distributed throughout our world
We know that even single exposures to these chemicals, if the amount is
large enough, can lead extremely severe poisoning. But this is not the major 43 ______
problem. The sudden illness or death of farmers, farm workers, and others
exposed to sufficient quantities of pesticides are very sad and should not occur. 44 ______
For the population as whole, we must be more concerned with the delayed 45 ______
effects of absorbing small amounts of the pesticides that visibly pollute 46 ______
our world.
Responsible public health officials have pointed out that the biological
affects of chemicals are cumulative over long periods of time, 47 ______
but the danger to individual may depend on the sum of the exposures 48 ______
received throughout his lifetime. For these very reasons the danger is
easily ignored. It is human nature to shake off that may seem to us a 49 ______
threat of future disaster. "Men are naturally most impressed by diseases
which have obvious signs," says a wise physician, Dr. Rene Dubos,
"yet some of their worst enemies slowly approach to them unnoticed." 50 ______

问答题Until recently daydreaming was generally considered either a waste of time or a symptom of neurotic tendencies, and habitual daydreaming was regarded as evidence of maladjustment or an escape from life’s realities and responsibilities. It was believed that habitual daydreaming would eventually distance people from society and reduce their effectiveness in coping with real problems. At its best, daydreaming was considered a compensatory substitute for the real things in life. As with anything carried to excess daydreaming can be harmful. There are always those who would substitute fantasy lives for the rewards of real activity. But such extremes are relatively rare, and there is a growing body of evidence to support the fact that most people suffer from a lack of daydreaming rather than an excess of it. We are now beginning to learn how valuable it really is and that when individuals are completely prevented from daydreaming, their emotional balance can be disturbed. Not only are they less able to deal with the pressures of day-to-day existence, but also their self-control and self-direction become endangered. Recent research indicates that daydreaming is part of daily life and that a certain amount each day is essential for maintaining equilibrium. Daydreaming, science has discovered, is an effective relaxationtechnique. But its beneficial effects go beyond this. Experiments show that daydreaming significantly contributes to intellectual growth, powers of concentration and the ability to interact and communicate with others.

单项选择题The resume of someone with working experience is different from that of a college graduate in ______.

单项选择题Which of the following statements can best summarize the second paragraph

单项选择题What can be inferred about the sightseers and playgoers

问答题由小学到中学，所修习的无非是一些普通的基本知识。就是大学四年，所授课业也还是相当粗浅的学识。世人常称大学为“最高学府”。这名称以易滋误解，好像过此以上即无学问可言。大学的研究所才是初步研究学问的所在，在这里做学问也只能算是粗涉藩篱，注重的是研究学问的方法与实习。学无止境，一生的时间都嫌太短．所以古人皓首穷经，头发白了还是在继续研究，不过在这样的研究中确是有浓厚的趣味。(梁实秋)