暑假里,小明计划去游泳池游泳,他计划每次游200米,相当于在游泳池游4个来回,游泳池长多少米?
200÷(4×2),
=200÷8,
=25(米),
答:游泳池长多少米.
1976240是______位数,有______级.
34005700000是______位数,有______级.
However occupied you are with study, try to ______ at least 15 minutes each day to have some exercise.[ ]
A. put out
B. put through
C. put off
D. put aside