4.6÷0.23=______÷233.15÷1.5=______÷15.
4.6×100=460,
3.15×10=31.5.
故答案为:460,31.5.
—________?
—I usually play tennis.[ ]
A. Why do you play tennis
B. What do you usually do on weekends
C. Where do you play tennis
D. When do you play tennis
用丰富的排线、重叠等,表现光照下的物体结构、质感、空间、表情等的画法为()。
A.明暗画法
B.明亮画法
C.线画法
D.线面结合画法