阿摩線上測驗
49. The passage is mainly about__________ .
(A) techniques to for American teenagers sleep better
(B) how to improve American teenagers’ grades
(C) American teenagers’ problem with not getting enough sleep
(D) why American schools need to start school earlier
答案：登入後查看
統計： A(39), B(25), C(448), D(19), E(0) #1934901
統計： A(39), B(25), C(448), D(19), E(0) #1934901
