【正确答案】 B

【答案解析】[听力原文]
We are rapidly nearing the end of this course in history of classical music. We have covered several centuries in a very short time. Much too short to do the music justice, of course, but then this is a survey course. From now until the end of this term, we will be talking about and listening to electronic music. You probably already know that it was in the 1950s that musical computers and synthesizers first appeared in universities. The first commercial synthesizers were sold about this time, too. The sophistication and complexity of these instruments has now increased to the point that they can produce almost any kind of sound. Some alarmists believe these new instruments will bring an end to classical music or that they already have. You know I don"t share this view, though I agree we are in the midst of revolution in instrument design. This, however, is not the first such revolution in musical history and probably not the last one either. Remember we"ve already studied the similar case in the early 19th century when the piano replaced the harpsichord and modern brass and wind instruments came into being. One of the most important reasons for the great popularity of electronic instruments is, of course, their relatively low price. Well, just look at it, only about 400 dollars for a piano. Naturally this has done a lot to increase sales for electronic instruments, expecting them to completely replace acoustic instruments.

[分析] 主旨题。
本文开篇明示本次讲座的目的是From now until the end of this term，we will be talking about and listening to electronic music，然后作者围绕电子乐器的发展进行了全面的介绍，如电子乐器的起源、特点，人们对该类乐器的不同看法及该类乐器与传统乐器相比价格低廉等。总之，综合本文的主要内容可得出其主要内容与B项内容相符，因此该项为正确答案。
[解题关键] 把握表示全文主旨的句式结构，如本文中from now until the end of this term，we will be talking about... 是解题的关键。

【正确答案】 C

【答案解析】[解析] 隐含事实的找寻和判断。
根据原文第一句We are rapidly nearing the end of this course in history of classical music 中的nearing the end of this course即我们已接近本课程的尾声。由此可判断，这段讲话是在接近学期末时进行的。
[解题关键] 根据题干关键词，如the semester 找到原文中相关信息。

【正确答案】 B

【答案解析】[解析] 观点态度的判断。
根据原文Some alarmists believe these new instruments will bring an end to classical music or that they already have。You know I don"t share this view... 即某些大惊小怪的人认为这些新式乐器会终结传统乐器的使用，或者认为这种终结过程已开始了。你们知道，我是不同意这种看法的。由此可知，B项内容与原文相符，是正确答案。
[解题关键] 正确区分他人观点和作者本人观点，可避免错误。本题中谈到他人观点时，作者使用了some alarmists的说法，而谈到自己观点时，使用I don"t share this view。

【正确答案】 A

【答案解析】[解析] 事实细节的找寻和判断。
原文指出This... is not the first such revolution in musical history...(这里的This即指电子乐器出现这一乐器革命)，由此可判断其后句Remember we"ve already studied the similar case in the early 19th century when the piano replaced...中的the similar case“相似情况”即指题干中关键词another significant change“另一次重要变革”。由此可见，除这次电子乐器产生的乐器革命外，历史上另一次乐器的重大变革应发生在19世纪早期，因此 A项内容是正确答案。
[解题关键] 根据题干关键词对原文上下文进行判断。

【正确答案】 D

【答案解析】[解析] 事实细节的找寻和判断。
根据题干中关键词price可找寻到原文相关信息One of the most important reasons for the great popularity of electronic instruments is，of course，their relatively low price．由此可知电子乐器盛行的原因在于其相对低廉的价位。由此可推测，电子钢琴与传统钢琴相比要便宜，显然D的说法与原文相符，是正确答案。
[解题关键] 注意文中表示比较的内容，理清比较的对象及比较关系。