干啰音较湿啰音有下列哪一特点（）
A.呼气时明显
B.吸气时或吸气末明显
C.咳嗽后可减轻或消失
D.性质不易变
E.部位恒定
参考答案：A
解析：干啰音为一种持续时间较长带乐性的呼吸附加音，音调较高，频率300～500Hz。持续时间较长，吸气及呼气时均可闻及，但以呼气时为明显。干啰音的强度和性质易改变，部位易变换，在瞬间数量可明显增减。
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| My grandfather is eighty years old. He always complains about how fast things have changed, and he often says that life was 1 in the past. Families aren't the same as 2 used to be. A lot of families have broken up. 3 husband and wife have problems with their marriage, they won't stay together 4 . And mothers stayed at home and 5 their children, but no more now. Everyone's busy working. So they don't have 6 for children. And the cars! No one 7 anymore; more and more people drive. But people walked to school every day, even in winter. Most families have computers now. In the past we didn't have computers. We didn't even have lights. My mother spent all day cooking in the kitchen. But now 8 eats home-cooked food anymore. And people don't talk to 9 anymore. They are too busy to talk, too busy to eat, too busy to think… Life Was simple then, 10 it isn't anymore. | ||||
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