语音知识(共5小题,每题1分) 小题1:abandon A.dangerous B.balance C.female D.advanced 小题2:achieve A.chemist B.technique C.stomach D.research 小题3:concept A.musician B.medicine C.secure D.special 小题4:bond A.ocean B.opposite C.income D.approve 小题5:sweat A.break B.least C.bread D.weak