Be careful when you come _______ the street, because the traffic is very busy at the moment.
已知函数f(x)的导数为f′(x),且满足关系式f(x)=2x3+x2f'(1)+lnx,则f′(2)的值等于( )
把一块体积较大的冰放在一个容器中熔化,当冰全部化成水以后,可知( )
长约4____
宽约5____
长约80____
高约2____