“哀民生之多艰”、“毛骨悚然”、“怒发冲冠”、“手舞足蹈”表现的情绪依次是（ ）
A：哀、惧、怒、喜
B：哀、喜、惧、怒
C：喜、怒、哀、惧
D：惧、喜、哀、怒
─ Mrs. Zhang was sent to teach English in a poor mountain village last year.
─ She said she would never forget some pleasant ______ while working there.
如图所示的四种家用电器中，主要将电能转化为机械能的是（ ）
