Which of me following is needed to make the trumpet work?

admin2015-03-11  32

问题 Which of me following is needed to make the trumpet work?

选项 A、Keen eyesight.
B、Long fingers.
C、Air pressure.
D、Daily cleaning.

答案C

解析 文中说"They are all blown”,因此可推断正确选项应为C。另外通过常识也可以判断trumpet是吹奏的乐器,靠空气的压力发出声音。
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