A:interest i
B:appealed to
C:been attracted
D:drew attention of
多音字组词
间:jiān____、jiàn____
还:hái____、huán____
重:chóng____、zhòng____
行:xíng____、háng____
①无论x取何值,y2的值总是正数;
②a=1;
③当x=0时,y2﹣y1=4;
④2AB=3AC;
其中正确结论是( )
物质的性质决定其用途。下列有关物质性质和用途的说法中错误的是()