“我们一定要采取措施，尽可能节省不必要的开支和浪费”这一语句符合公文的写作要求并且没有语病。
参考答案：错
Obviously, the advantage we take of solar energy is ________ enough.We have to work still harder.
A．far from
B．along with
C．next to
D．out of
硅酸盐水泥熟料的主要矿物成份是硅酸钙。
