【简答题】(本小题满分12分) 已知函数 , (Ⅰ)讨论函数 的单调区间和极值点; (Ⅱ)若函数 有极值点 ,记过点 与原点的直线斜率为 。是否存在 使 ?若存在,求出 值;若不存在,请说明理由。
【单选题】While our city tries impatiently to change its appearance by tearing down old buildings, more and more citizens are suggesting ways to ____ the historically important architecture. [ ]
【单选题】在日月引力作用下,海平面发生周期性升降的现象称为
【判断题】康德曾说过“追求知识是为了摆脱愚蠢”。()
【简答题】阅读理解。 With the development of material prosperity (繁荣), advertisements have become more and more important in our daily life. Advertisements give the newest information about products. If there were n...
【简答题】补全对话。 A: Jim, what are you going to do tonight? B: I have no idea.What about you? A: 1. _____ B: Sounds good! But I hear there will be a talk at 7:00 in the City Hall A: 2. _____ B: The History of Mus...
【单选题】While our city tries impatiently to change its appearance by tearing down old buildings, more and more citizens are suggesting ways to ____ the historically important architecture.
【多选题】How do the foreigners hung up(挂断) the phone? ( )
A.
OK,good-bye, good night.
B.
Alright. Great. Talk to you soon. Bye.
C.
Sounds good. I will be in touch, bye.
D.
All right then. See you later, bye.
【简答题】补全对话。 Kate: Jim, do you know when Father’s Day is? 1 , but I’m not sure. Jim: Yeah, that’s right. It’s next Tuesday. 2. ? Kate: Yes, but I’m not sure what to buy for him. 3 ? Jim: What about a footbal...