A:两地气温的平均数相同
B:甲地气温的中位数是6℃
C:乙地气温的众数是4℃
D:乙地气温相对比较稳定
如图,在菱形ABCD中,DE⊥AB,cosA=35,BE=2,则tan∠DBE的值( )
With these words, Tom went on ________ his homework.