A:decreased
B:destroyed
C:returned
D:reduced
把重6N,边长为0.1m的正方体物块投入足够多的水中,当物块静止时,下列说法正确的是(g取10N/kg)( )
从二十世纪六十年代开始印度先后推行两次绿色革命,主要目的是解决( )
—You'd better not. I'll help you _______ it.