Study confirms that moderate drinking
reduces stroke risk. Similar to the way a drink or two a day protects against
heart attacks, moderate alcohol consumption wards off strokes, a new study
found. The study also found that the type of alcohol
consumed—beer, wine or liquor-was unimportant. Any of them, or a combination was
protective, researchers reported in today’s Journal of the American Medical
Association. "No study has shown benefit in recommending alcohol to those who do
not drink", cautioned the authors, led by Dr. Ralph L. Sacco of Columbia
University College of Physicians and Surgeons in New York. But the new data
support the guidelines of the National Stroke Association, which say moderate
drinkers may protect themselves from strokes by continuing to consume alcohol,
the authors said. The protective effect of A. different wines work differently on drinkers at stroke risk B. nondrinkers should also consume a moderate amount of alcohol C. drinkers should keep to one kind of alcohol to ward off strokes D. moderate alcohol consumption protects against strokes
[单项选择] {{B}}TEXT C{{/B}}
The study of philosophies should make
our own ideas flexible. We are all of us apt to take certain general ideas for
granted, and call them common sense. We should learn that other people have held
quite different ideas, and that our own have started as very original guesses of
philosophers. A scientist is apt to think that all the problems
of philosophy will ultimately be solved by science. I think this is true for a
great many of the questions on which philosophers still argue. For example,
Plato thought that when we saw something, one ray of light came to it from the
sun, and another from our eyes and that seeing was something like feeling with a
stick. We now know that the light comes from the sun, and is reflected into our
eyes. We don’ t know in much detail how the changes in our eyes give rise to A. the development of science really can solve a great many of the problems on which philosophers still argue B. Plato knew nothing about Physics C. the scientists have achieved a lot in terms of light theory D. different people have different ways of perception
[单项选择] {{B}}TEXT D{{/B}} Psychologists study memory
and learning with both animal and human subjects. The two experiments reviewed
here show how short-term memory has been studied. Hunter studied
short-term memory in rats. He used a special apparatus which had a cage for the
rat and three doors. There was a light in each door. First the rat was placed in
the closed cage. Next one of the lights was turned on and then off. There was
food for the rat only at this door. After the light was turned off the rat had
to wait a short time before it was released from its cage. Then, if it went to
the correct door, it was rewarded with the food that was there. Hunter did this
experiment many times. He always turned on the lights in a random order.
The rat had to wait different intervals before it was released from the
cage. Hunter found that if the rat had to wait more than ten seconds, it could
not remember the correct door. Hunter’s results s A. where the food was B. how to leave the cage C. how big the cage was D. which light was turned on
[单项选择]{{B}}Text 2{{/B}}
Botany, the study of plants, occupies a
peculiar position in the history of human knowledge. For many thousands of years
it was the one field of awareness about which humans had anything more than the
vaguest of insight. It is impossible to know today just what our Stone Age
ancestors knew about plants, but from what we can observe of preindustrial
societies that still exist, a detailed learning of plants and their properties
must be extremely ancient. This is logical. Plants are the basis of the food
pyramid for all living things, even for other plants. The have always been
enormously important to the welfare of people, not only for food, but also for
clothing, weapons, tools, dyes, medicines, shelter, and a great many other
purposes. Tribes living today in the jungles of the Amazon recognized literally
hundreds of plants and know A. To make the passage more poetic. B. To cite examples of plants that are attractive. C. To give botanical examples that all readers will recognize. D. To illustrate the dirversity of botanical life.
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