条形图是用宽度相同的条形的高度或长度来表示数据多少。
参考答案:对
The lecture was called off five minutes before it was supposed to start,________made the audience angry.[ ]
A. what
B. that
C. when
D. which
19世纪80年代,我国率先采用电灯照明的不是()。
A.上海
B.广州
C.北京
D.天津