社会实践活动主要是让大学生在参与社会生活和社会生产的过程中,通过亲身经历获得()、()的知识和技能。
参考答案:直接;现实
I told my mother I wasn't worried about my exam. But in fact I ___________. [ ]
A. did
B. was
C. have
D. had
家庭安防安防告警(普通版)提供哪种告警方式?()
A.短信
B.视频
C.彩信
D.多媒体