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问题 选择题

（2010·遵义，1）下列变化属于物理变化的是

A．葡萄酿酒

B．水结成冰

C．钢铁生锈

D．红磷燃烧

答案

答案：B

A、葡萄酿酒的过程中有酒精生成，属于化学变化，故选项错误；

B、水结成冰的过程中没有新物质生成，属于物理变化，故选项正确；

C、钢铁生锈的过程中有新物质铁锈生成，属于化学变化，故选项错误；

D、红磷燃烧的过程中有五氧化二磷生成，属于化学变化，故选项错误；

故选B．

问答题 简答题

魏氏组织的金相特征及形成条件是什么？在低碳和高碳钢中有何区别？
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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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