函数f(x)=ex-x-1的驻点为()。
A. x=0
B. x=2
C. x=0,y=0
D. x=1,e–2
Going away to college has made me much more _______(独立的) .
There is a _________ (矛盾) between what your parents want and what you want.
A _________ (一瞥) at a map of the Pacific Ocean reveals that there are many islands far out at sea that are actually volcanoes.