下列事件属于必然事件的是 [ ]
A.在1个标准大气压下,水加热到100℃沸腾
B.明天我市最高气温为56℃
C.中秋节晚上能看到月亮
D.下雨后有彩虹
答案:A
By the end of last year another new gymnasium_____ in Beijing
A.would be completed
B.was being completed
C.has been completed
D.had been completed
画出喷射器的图形符号。