A. choosing a career according to what one is skilled in
B. acquiring knowledge by working hard at school
C. finding one's strong and weak points
D. developing one's abilities useful in school work
A.源远流长 兼容并包 去粗取精
B.历久弥新 海纳百川 吐故纳新
C.一枝独秀 兼收并蓄 求同存异
D.弥足珍贵 无与伦比 取长补短
A.平台 浮现 碰撞
B.空间 呈现 撞击
C.课题 展现 达成
D.界面 涌现 获得
A.空气发电未能普及的原因
B.空气发电的特点及发展前景
C.空气发电的优势与存在的缺陷
D.空气发电是能源发展的新趋势