What do we mean by a satisfactory standard of living? Obviously, it must include the basic necessities of life such as food, clo

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问题    What do we mean by a satisfactory standard of living? Obviously, it must include the basic necessities of life such as food, clothing and shelter. To get these necessities on regular basis, a person must have a reliable income. But we have other needs which would probably also be included as basic, such as health and education facilities.
   We may think of all of these as our needs. Yet most of us would be far from satisfied if we had nothing more than these which are supplied for us. We all enjoy extra income to spend on things like books, sports or hobbies. Sometimes we save some of this extra income to pay for future expense of this type on holidays. So we must add our wants to our basic needs. Our standard of living is the degree, to which these needs and wants are satisfied.
   But as time goes on, what we think of as our basic needs changes. Twenty years ago a television would have been a luxury, and still is in many countries now. Even now we cannot say it is a need in the same sense as food, clothing and shelter. Yet if most of the people of a country have one, it comes to be accepted as a need. It is possible therefore to have food, clothing and shelter and still be poor by the standards of our own society.
With time going on, ______.

选项 A、a luxury may change into a need which most people want to get
B、the basic needs are getting smaller and smaller
C、a luxury and the basic needs can be exchanged
D、the basic needs can change into a luxury

答案A

解析 推理题。文章最后一段第一句提到,随着时间的推移,我们所认为的基本需求会发生变化,几十年前的奢侈品几十年后也许就成了普通物品了,所以选项A(一个奢侈品可能会变成很多人的基本需求)正确。选项B(基本需求越来越少)、选项C(奢侈品和必需品可以互换)和选项D(必需品可以变成奢侈品)都不符合文章内容。故本题选A。
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