下列各式中,计算结果为正的是( )
A:4.1+(﹣5.5)
B:(﹣6)+2
C:﹣3+5
D:0+(﹣1)
________ people like doing sports every morning.
— There's somebody at the door. Who ____ it be? Is it the postman?—No. It ______ be him. It's just seven o'clock. It's too early.
下列关于生命的说法正确的有( )
①生命至上,生命的价值高于一切 ②人的生命最脆弱
③生命最宝贵,要敬畏生命、善待生命 ④不要漠视自己的生命,也不要漠视他人的生命