A. hearingB. strengthC. recognitionD. measureI haven't ……

单项选择题Listening to loud music at rock concerts caused hearing loss in some teenagers.

单项选择题义务教育阶段的英语课程具有______和______双重性质。

单项选择题关于英语写的技能中说法不正确的一项是______。

单项选择题The experiment has（）the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.

A.found out
B.pointed out
C.ruled out
D.carried out