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问题 问答题

篮球从高处自由落下，在下落的过程中，它的高度越来越小，重力势能越来越小，你认为减小的重力势能哪里去了？篮球在下落过程中，速度越来越大，动能越来越大，那它增加的动能又是来自哪里？根据动能和重力势能的大小变化，你能猜想到什么？

答案

答：篮球从高处自由落下，在下落的过程中，它的高度越来越小，重力势能越来越小，减小的重力势能转化为动能了；篮球在下落过程中，速度越来越大，动能越来越大，增加的动能来自减小的重力势能；根据动能和重力势能的大小变化我们可以猜想到动能和重力势能可以相互转化．

填空题

A good translator is by definition bilingual. The opposite is not ______(1) true, however. A born and bred bilingual will still need two__________(2) to become a translator: first, the skills and experience necessary for__________(3); second, knowledge of the field in which he or she will__________(4). The skills and experience for translation include the ability to write ______(5) in the target language, the ability to read and understand the_________(6) language material thoroughly, and the ability to work with the latest__________(7) and communication hardware and software.Does a born and bred bilingual__________(8) a better translator than someone who learned language B later in__________(9) There is no definite answer, but the following issues are important.__________(10), a born and bred bilingual often suffers from not truly knowing __________(11) language well enough to translate, with some even suffering from what __________(12) known as a lingualism, a state in which a person lacks_________(13) full, fluent command of any language. Second, born and bred bilinguals__________(14) don’’t know the culture of the target language well enough to_________(15) top-quality translations, or cannot recognize what aspects of the source language__________(16) its culture need to be treated with particular care, as they_________(17) in a sense too close to the language. And last, they often_________(18) the analytical linguistic skills to work through a sticky text.On_________(19) other hand, the acquired bilingual may not have the same in-depth _________(20) of colloquialisms, slang, and dialect that the born bilingual has. Also, the acquired bilingual will not be able to translate as readily in both directions (from B to language A and A to language B). Finally, born bilinguals often have a greater appreciation of the subtleties and nuances of both their languages than someone who learns their B language later in life can ever hope to have.
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判断题

裂解气深冷分离过程中，脱除炔烃常用催化加氢法。
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