It seems that El Niño ____ some disasters in the world in the past few months.
A:has caused
B:is causing
C:will cause
D:caused
①以直线MN为对称轴作图形A的轴对称图形,得到图形B.
②将图形A向下平移6格,得到图形C.
③将图形A绕点O顺时针旋转90°,得到图形D.
______sleep too late. It's bad for your health.
①耕地面积广阔 ②粮食单产高 ③土壤肥沃 ④劳动力丰富