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For this task, you will write a response to a question about a reading passag
For this task, you will write a response to a question about a reading passag
游客
2024-01-04
36
管理
问题
For this task, you will write a response to a question about a reading passage and a lecture. You may take notes, and you may use your notes to help you write your response. Your response will be scored on the quality of your writing and on how well you connect the points in the lecture with points in the reading. Typically, an effective response will have 150 to 225 words.
In animals and humans, genes determine the general size and shape of the organism, but there may also be variation in physical characteristics due to environmental influences. All organisms function most efficiently under certain environmental conditions; however, an individual organism may react to some change in the environment with responses that change the form or internal structure of the body.
An organism’s environment includes nonliving factors such as temperature, water, and nutrients. The environment also includes biological factors: all the other organisms that are part of any individual’s environment. Environmental stimuli can have important effects on individual organisms, groups, and whole populations.
The influence of environmental factors is particularly effective during the formative stages of life, both before and after birth. The experiences of early life determine the physical and mental attributes of the young and thereby determine the characteristics of the adult. Early influences can have favorable or unfavorable effects on the young organism’s development. Environmental factors exert such a strong influence on development that some physical or mental characteristics are difficult or impossible to change later in life.
Research on many types of animals and observations of human life have revealed that early environmental influences affect an individual’s initial rate of growth and resistance to various types of stress, as well as the ultimate body size of the adult. Environmental factors also affect learning ability and behavioral patterns in the young.
Now listen to the recording. When you hear the question, begin your response. You may look at the passage during the writing time.
Summarize the points made in the lecture you just heard, explaining how they support points made in the reading.
Now listen to part of a lecture on this topic in a biology class.
We’ve learned a lot about the effects of early influences on the physical characteristics of both animals and humans. One thing we know is that almost any kind of stimulation—either positive or negative—any stimulation of the young shortly after birth will affect their rate of growth as well as their resistance to stress. Daily handling—such as touching, hugging, and massaging—can promote healthy growth and boost the immune system. Exposure to cold, on the other hand, can have negative effects and leave the young animal more vulnerable to disease.
Another thing we know is that malnutrition early in life can have lifelong consequences. If the food intake of the young is limited, this will decrease the rate of growth and the body size of the adult. Animal studies show some interesting results. For example, deer born during a period of food scarcity, or in a crowded population, will remain relatively small in size, even if their adult diet is adequate or the density of the population decreases. The effect of poor nutrition on deer can also extend to the following generation, as the offspring of small deer will also be small.
The eating habits acquired early in life tend to last throughout life, affecting eating behaviors. For example, rats that are used to eating a low-protein diet will continue eating it by choice, even if a more protein-rich diet is available to them later.
With humans, low protein intake or almost any other form of nutritional deficiency during early childhood will result in a slowing of growth, smaller body size, physical deformation, or tendency to get sick—characteristics that can last a lifetime.
Moreover, poor nutrition affects the mental development of children. Children who don’t eat well don’t learn well in school. They may have difficulty paying attention and may not be able to remember information. As a result, these children may develop negative attitudes toward school. Several behavioral problems in school children have been linked to poor eating habits.
Summarize the points made in the lecture you just heard, explaining how they support points made in the reading.
选项
答案
The lecture states that any kind of stimulation of the young shortly after birth will affect the rate of growth and the resistance to stress. Stimulation can have positive or negative results. This supports the point in the reading that the influence of environmental factors is particularly effective during the formative stages of life. It also supports the point that early influences can have favorable or unfavorable effects on the young organism’s development.
The lecture states that malnutrition early in life can have lifelong consequences; for example, deer born when food is scarce will remain relatively small, even if their adult diet improves. This supports the point in the reading that environmental factors exert such a strong influence on development that some physical characteristics are difficult or impossible to change later in life.
The lecture states that the eating habits acquired early in life tend to last throughout life; for example, rats that are used to eating a low-protein diet will continue to do so by choice. This supports the point in the reading that environmental factors exert such a strong influence on development that some mental characteristics are difficult or impossible to change later in life.
The lecture states that poor nutrition in children affects their mental development and their ability to learn in school. This supports the point in the reading that environmental factors affect learning ability and behavioral patterns in the young. (4.1-4.5)
解析
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