下列几项中不属于音乐的基本要素的是()
A.歌词
B.速度
C.旋律
D.节奏
参考答案:A
David watches TV six hours a day and eats much junk food, but he never exercises. So he is ___.
A.healthy
B.unhealthy
C.serious
D.smart
消防控制室值班人员在值班上岗前只接受该火灾报警控制器的操作培训即可。