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  3. Modern mass-production methods lower the cost of making goods, and thus give us better values. At the same time, American ingenu

Modern mass-production methods lower the cost of making goods, and thus give us better values. At the same time, American ingenu

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问题     Modern mass-production methods lower the cost of making goods, and thus give us better values. At the same time, American ingenuity (独创性) and science are constantly at work improving the quality of products. In this way, better quality products at good values are continually being brought to the people of all income groups.
    As an example of how this worked, when facial tissues (面巾纸) were first put on the market in 1924, they were made in limited quantities and sold at 65 cents per box of 200. People like these facial tissues immediately and began asking for them when they went into different stores. Because there was such a demand for the product, manufacturers began making tissues in larger and larger quantities’. Because the manufacturers were making tissues in greater quantities, their production costs were lowered, so that the price of tissues went down. In the meanwhile, the quality of facial tissues was constantly improving, because more manufacturers went into the business of making tissues, and each manufacturer strove to make his product better than his competitors’. Today, instead of costing 65 cents, a box of 200 tissues costs around one-third of that price, and they are both softer and stronger.
    When people are free to compete—when they are free to make more things and make them better—everyone benefits.
According to the passage, we can see that lower prices and better quality occur
选项 A、as a result of the effect of one on the other
B、always at the same time
C、independently of each other
D、when the demand exceeds the supply
答案B
解析 本题考查考生根据文章内容进行推断的能力。根据文章内容可知，批量生产和自由竞争使得产品质优价廉。而不是“质优”和“价廉”互为因果，排除A项。也不是两者之间没有任何关系，排除C项。而当需求超过供给时，如果没有“自由竞争”和“批量生产”的话，产品也不会质优价廉。因此选B项。
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