一个关于钢琴话题的演讲。
跟大家分享其中很具代表性的一道题：
15. According to the professor, why did the piano become more popular than the harpsichord'? D
A. Piano music was easier to compose than harpsichord music
B. Piano music was better for accompanying the popular new dances ofthe 1700s
C. The piano had a more attractive size and shape than the harpsichord.
D. The piano could express a wider range of emotions than the harpsichord.
这是一道比较目的题，问的是为什么钢琴比大键琴要更受欢迎了，请看原文：
Well,the percussive effect of those little hammers means that the pianist,unlike the harpsichordist, can control the dynamics of the sound - how softly or loudly each note is struck, hence the name, pianoforte, soft and loud. Now artistically for both composers and performers this was a major turning point. This brand new instrument, capable of producing loud and soft tones, greatlyexpanded the possibilities for conveying emotion.
托福听力十分喜欢考比较，所以文章听到比较关系一定是重点，那么比较类的信号词有哪些呢?常见的有：but, however, in fact, unlike, contradict, contrast, difference, rather than, other than, on the other hand, distinction. 同学们在听力中一定要对比较类信号词非常敏感哦~
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