已知函数在x0处可导,且,则f'(x0)的值为: ()
A.4
B.-4
C.-2
D.2
参考答案:C
They woke up, _____ everything around _____. [ ]
A. found changed
B. finding changed
C. to find changing
D. to find changed
选用什么诊治方案最恰当
A.心理治疗
B.选择性5-羟色胺再摄取抑制剂(SSRI类药治疗
C.苯二氮草类药物治疗
D.改善脑代谢药物治疗
E.电抽搐(EC治疗