A:What
B:How about
C: How much
关于物质的跨膜运输方式说法正确的是( )
已知函数fx=2x-12x+1,则不等式fx-2+fx2-4<0的解集为( )
下列现象中属于光的直线传播的是( )
There will be a basketball game tomorrow in our school. Class 1 will play a____ Class 2.