单选题：The word "expertise" in line 3 could be best replaced by

题目内容：

The word "expertise" in line 3 could be best replaced by A．"experts".
B．"scientists".
C．"scholars".
D．"special knowledge".

参考答案：

答案解析：

Many people leave their hearing problem untreated because

Many people leave their hearing problem untreated becauseA．it is not seriou B．Cr

分类：理工类题型：单选题

Which of the following is NOT true of Crystal Ear?A．It is highly sensitiv B．It i

分类：理工类题型：单选题

Crystal Ear　　One day a friend asked my wife Jill if I wanted a hearing aiD．"He

分类：理工类题型：单选题

男性49岁，口底多间隙感染，肿胀明显，可及捻发音及波动感，主诉呼吸困难，下列处理恰当的是（　　）。A．穿刺抽脓 B．加大抗生素剂量 C．局部冷敷 D．广泛切开引

分类：理工类题型：单选题

牙板的发生始于（　　）。A．胚胎第4周 B．胚胎第2周 C．胚胎第3周 D．胚胎第5周 E．胚胎第6周

分类：理工类题型：单选题