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问题 填空题

很多有生活经验的同学在煮好的整鸡蛋用凉水冷却一下就好去壳了，这时鸡蛋内能是通过    的方式改变的．如果水的质量是0.5kg，初温为20℃，鸡蛋取出时水温为30℃，鸡蛋放出的热量为     J，水吸收的热量为    J。 [c水＝4.2×l03J/(kg·℃)]

答案

热传递    2.1×104    2.1×104

题目分析：（1）鸡蛋从水中吸收热量，内能增加、温度升高，是通过热传递的方式改变内能的；

（2）水吸收的热量：Q=cm△t=4.2×l03J/（kg•℃）×1kg×10℃=4.2×104J；

鸡蛋放出的热量就等于水吸收的热量

点评：（1）改变物体内能有两种方法，一是做功，二是热传递，做功是能量的转化，而热传递是能量的转移；

（2）已知水的比热容、质量和升高的温度，可利用公式Q=cm△t计算水吸收的热量；

选择题

北京时间2011年8月7日23时，台风“梅花”在中国沿海登陆，“梅花”台风引发重大水灾，重创中国沿海地区。据此完成1～2题。

1 ．能反映受此次台风影响地区近地面气压分布状况和水平方向上气流状况的示意图是[ ]

A．①      

B．②      

C．③      

D．④

2．下列有关台风“梅花”的叙述正确的是[ ]

A．会带来大风、暴雨、风暴潮等灾害      

B．受其影响杭州将吹偏北风

C．登陆后风力将增强        

D．登陆后暴雨强度将减弱
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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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