In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Q: Article: Humans and many other mammals have unusually efficient internal temperature regulating systems that automatically maintain stable core body temperatures in cold winters and warm summers. In addition, people have developed cultural patterns and technologies that help them adjust to extremes of temperature and humidity . In very cold climates, there is a constant danger of developing hypothermia , which is a life threatening drop in core body temperature to below normal levels. The normal temperature for humans is about 37.0degC. However, differences in persons and even the time of day can cause it to be as much as 6degC higher or lower in healthy individuals. It is also normal for core body temperature to be lower in elderly people. Hypothermia begins to occur when the core body temperature drops to 34.4degC. Below 29.4degC, the body cools more rapidly because its natural temperature regulating system usually fails. The rapid decline in core body temperature is likely to result in death. However, there have been rare cases in which people have been saved after their temperatures had dropped to 13.9-15.6degC. This happened in 1999 to a Swedish woman who was trapped under an ice sheet in freezing water for 80 minutes. She was found unconscious, not breathing, and her heart had stopped beating, yet she was eventually saved despite the fact that her temperature had dropped to 13.7degC. In extremely hot climates or as a result of uncontrollable infections, core body temperatures can rise to equally dangerous levels. This is hyperthermia. Life threatening hyperthermia typically starts in humans when their temperatures rise to 40.6-41.7degC. Only a few days at this extraordinarily high temperature level is likely to result in the worsening of internal organs and death.
Question: Why can humans keep stable body temperatures in different seasons?
Options: (A) Because their bodies are unusually efficient. (B) Because they experience different climates. (C) Because they can adjust to cultural patterns and technologies. (D) Because they have internal temperature regulating systems.

A: D
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Q: Article: Of all the areas of learning the most important is the development of attitudes. Emotional reactions as well as logical thought processes affect the behavior of most people. "The burnt child fears the fire" is one instance; another is the rise of figures like Hitler. Both these examples point up the fact that attitudes come from experience. In the one case the experience was direct and impressive; in the other it was indirect and gradual. The classroom teacher in the elementary school is in strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose word they respect. Another reason it is true is that pupils often search somewhat deeply into a subject in school that has only been touched upon at home or has possibly never occurred to them before. To a child who has previously acquire little knowledge of Mexico, his teacher's method of handling such a unit would greatly affect his attitude toward Mexicans. The teacher can develop proper attitudes through social studies, science matters, the very atmosphere of the classroom, etc. However, when children come to school with undesirable attitudes, it is unwise to attempt to change their feelings by criticizing them. The teacher can achieve the proper effect by helping them obtain constructive experience. To illustrate, first-grade pupils, afraid of policemen will probably change their attitudes after a classroom talk with the neighborhood officer in which he explains how he protects them. In the same way, a class of older children can develop attitudes through discussion, research, outside reading and all-day trips. Finally, a teacher must constantly evaluate her own attitudes, because her influence can be harmful she has personal prejudices. This is especially true in respect to controversial issues and questions of which children should be encouraged to reach their own decisions as result of objective analysis of all the facts.
Question: The author uses the phrase "the burnt child fears the fire" in order to _ .
Options: (A) stress the importance of keeping child from the fire (B) exemplify the opinion that attitudes come from experience (C) illustrate the important role of attitudes towards study in the early childhood (D) none of the above

A: B
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Q: Article: A young father was visiting an old neighbor.They were standing in the old man's garden,and talking about children.The young man said,"How strict should parents be with their children?" The old man pointed to a string between a big strong tree and a thin young one. "Please untie that string,"he said.The young man untied it,and the young tree bent over to one side. "Now tie it again, please."said the old man."But first pull the string tight so that the young tree is straight again.'' The young man did so.Then the old man said,"There,it is the same with children.You must be strict with them, but sometimes you must untie the string to see how they are getting on.If they are not yet able to stand alone,you must tie the string tight again.But when you find that they are ready to stand alone,you can take the string away.''
Question: The story is about _ .
Options: (A) How to take care of young trees (B) How strict parents should be with their children (C) How the young father should get on with his old neighbor (D) How to help children to study

A:
B
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