A:0.3×108
B:3×106
C:3×108
D:3×109
秋天是个丰收的季节,农民伯伯为此 付出 了艰辛的劳动。( )
An enormous amount of energy and resources went into the c____(建设) of those houses.
下列关于文学常识的表述错误的一项是( )