点A(﹣2,﹣3)所在象限是( )
81÷9=____
63÷9=____
6×9-6=____
9×3-7=____
4×9+5=____
9×7-3=____
I usually get up early ______ the morning.
一名同学在冰面上行走时,突然发现脚下的冰即将破裂,他应采取的措施是( )