曲线f(x)=x3-x上点(1,0)处的切线方程为______。
参考答案:y=2x-2
If I hadn’t stood under the ladder to catch you when you fell, you _________ now.
A.wouldn’t be smiling
B.couldn’t have smiled
C.won’t smile
D.didn’t smile
全肾照射TD5/5()。
A.1000cGy
B.2000cGy
C.3000cGy
D.4000cGy
E.5000cGy