Passage One.
听材料,回答下列各题:
A.The replacement of the harpsichord by the piano.
B.The development of electronic musical instruments.
C.The relative costs of different types of musical instruments.
D.The performance of classical music on synthesizers.
17、
A.He is surprised by it.
B.He thinks it is too soon to tell.
C.He disagrees with it.
D.He is alarmed by it.
18、
A.In the early nineteenth century.
B.In the early twentieth century.
C.In the late nineteenth century.
D.In the mid-twentieth century.
19、Passage Two.
听材料,回答下列各题:
A.Because it was too heavy.
B.Because it did not bend easily.
C.Because its string was short.
D.Because it did not shoot far.
20、
A.It went out of use 300 years ago.
B.It was invented after the short bow.
C.It was discovered before fire and the wheel.
D.It is still in use today.