函数y=x-ln(1+x)的驻点为x=______
参考答案：[*]
解析：[提示] 用复合函数求导公式求出y’，再写出dy．
To my _____, he won the first prize in the English competition.[ ]
A. surprise
B. surprises
C. surprised
D. surprising
热力学温标的基准点是水的三相点，并规定该点的温度为273.16K，若换算为摄氏度为（）℃。
