(____)A. This is the leg.
(____)B. Let's go to school.
(____)C. Shake your body.
(____)D. This is my face.
(____)E. Touch your nose.
不等式组3x+5>-7x-63x2<2x3+1的整数解是____
观察如图所示中甲环的外圈与乙环的内圈哪个大?____ ,这个现象说明了什么? ____ 。再动动脑想一想,你可以有几种方法来证明你的判断? ____ 。
495克盐水,有5克盐,含盐率为95%.(判断对错)