中小学的“双基”教学是指基础知识、基本技能的教学。
参考答案：对
E-mail, as well as telephones, ________ an important part in daily communication.
A．is playing
B．have played
C．are playing
D．play
青春期是否可使用口服避孕药？（）
A、不可以
B、可以
C、多数人可以
D、少数人可以
