慢性化脓性中耳炎常见的临床表现是：（）
A．听力下降
B．鼓膜穿孔
C．耳流脓
D．眩晕
E．耳痛
参考答案：A,B,C
__________ the extremely hot weather, we continued having classes.
A．Thanks to
B．In addition to
C．In defense of
D．Regardless of
