未知题型
本题主要考查的知识点为复合函数求值．
--Why does the Lake smell terrible? --Because large qua...
单项选择题--Why does the Lake smell terrible? --Because large quantities of water . A． have polluted B. is being polluted C. has been polluted D. have been polluted
A.1B.2C.3D.4
单项选择题
A.奇函数，且在（0，+∞）单调递增B.偶函数，且在（0，+∞）单调递减C.奇函数，且在（-∞，0）单调递减D...
