1克的20%与2克的10%相比 [ ]
A.大
B.小
C.相等
答案:C
Before leaving home, make sure to turn off the electricity, lock the door, ________ the windows open.
A.and not to leave
B.instead of leaving
C.rather than leave
D.and not leave
下图是家蚕发育过程示意图,请选出发育过程排序正确的一项( )
A.①②③④
B.①③④②
C.②④③①
D.②③④①