解:(1)∵指数函数y=g(x)满足:g(2)=4,
∴g(x)=2x;
(2)由(1)知:f(x)=-2x+n2x+
The road was covered with sand ________ the heavy sandstorm.
煤矿工人____ ,千层地底挖出____。满身虽黑却____ ,为了祖国奉献____。