Botany, the study of plants, occupies a
peculiar position in the history of human knowledge. For not many
thousands of years it was the one field of awareness about which humans had
anything more than the vaguest of insights(了解). It is impossible to know today
just what our Stone Age ancestors knew about plants. But from what we can
observe of pre-industrial 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.
They have always been enormously important to the welfare of peoples, 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
recognize literally hundreds of plants A. there is no clear way to determine the extent of our ancestors’ knowledge of plants B. it is not surprising that early humans had a detailed knowledge of plants C. it is reasonable to assume that our ancestors behaved very much like people in preindustrial societies D. human knowledge of plants is well organized and very detailed
更多"{{B}}第二篇{{/B}}
Botany, "的相关试题:
[单项选择]{{B}}第二篇{{/B}}
Botany, the study of plants, occupies a
peculiar position in the history of human knowledge. For not many
thousands of years it was the one field of awareness about which humans had
anything more than the vaguest of insights(了解). It is impossible to know today
just what our Stone Age ancestors knew about plants. But from what we can
observe of pre-industrial 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.
They have always been enormously important to the welfare of peoples, 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
recognize literally hundreds of plants A. probably had extensive knowledge of plants B. thought there was no need to cultivate crops C. did not enjoy the study of botany D. placed great importance on the ownership of property
[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. They probably had extensive knowledge of plants. B. They thought there was no need to cultivate crops. C. They did not enjoy the study of botany. D. They placed great importance on the ownership of property.
[填空题]Botany, the study of plants, occupies a peculiar position in the history of human knowledge. We don’t know what our Stone Age ancestors knew about plants, but from what we can observe of reindustrialize 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. ______ Tribes living today in the jungle of the Amazon recognize hundreds of plants and know many properties of each. To them botany has no name and is probably not even recognized as a special branch of" knowledge" at all. - A. Yet few people will fail to recognize a rose, an apple, or an orchid.
- B. From then on, humans would increasingly take their living from a few plants.
- C. They have always been enormously important to the welfare of people, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and many other purposes.
[单项选择]来源:考试大-职称英语考试第二篇Study Says Dogs Can Smell Cancer
Dogs are known for their sense of smell.They can find missing people and things like bombs and illegal drugs.Now a study suggests that the animal known as man’s best friend can even find bladder(膀胱)cancer.
Cancer cells are thought to produce chemicals with unusual odors(气味).Researchers think dogs have the ability to smell these odors,even in very small amounts,in urine(尿).The sense of smell in dogs is thousands of times better than in humans.
The study follows reports of cases where,for example,a dog showed great interest in a growth on the let of its owner.The mole(痣)was later found to be skin cancer.
Carolyn Willis led a team of researchers at Amersham Hospital in England.They trained different kinds of dogs for the experiment.The study involved urine collected from bladder cancer patients,from people with other diseases and from healthy people.
Each dog was tested eight times.In each test there were seven samples f A. 36 bladder cancer patients. B. 144 cancer patients. C. 108 healthy people. D. 144 sick and healthy people.
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