Soon the children found kites easy and interesting ____ (to fly/flying).
已知a=2014×1001,b=2015×1000,c=2016×999,则数a,b,c按从小到大的顺序排列,结果是____
下列运算中正确的个数有( )
①(﹣5)+5=0;②﹣10+(+7)=﹣3;③0+(﹣4)=﹣4;④-27-+57=-37;⑤﹣3﹣2=﹣1
下列说法不正确的一项是( )
下列属于特异性免疫的是( )
— Where are you going?
— I'm going to the bus station to my aunt.