用方框所给的选项完成对话。

A: You must be really excited about leaving for America tomorrow, Li Ping!

B: Yeah. ____

A: Nervous about what?

B: I don't know many of the customs and manners in the USA. ____

A: Sure.

B: ____ 

A: Well, it's important to be on time when you're invited for dinner. ____  Americans expect their guests to be on time.

B: Then how long may I stay there?

A: ____  Or you seem to have come only for the meal. When your friends seem to be getting tired and running out of things, it's time to leave. The next day, call or write a thank-you note to say how much you enjoyed the evening.  

（Ⅰ）若a=1，求曲线y=f（x）在点（1，f（1））处的切线方程；

（Ⅱ）若函数f（x）在其定义域内为增函数，求a的取值范围；

（Ⅲ）在（Ⅱ）的条件下，设函数 $g\left(x\right)=\frac{e}{x}$ ，若在1，e上至少存在一点x₀，使得f（x₀）≥g（x₀）成立，求实数a的取值范围．

用下列词语造句

①吮吸：

②不屈不挠：

器官移植的成功是人类医学的伟大成果，因为移植到人体内的器官很不易成活。根据现代免疫学的概念，植入人体的器官.组织细胞相当于____。

把奥运圣火送上地球最高点的藏旅火炬手古吉说：“困难只能吓倒懦夫和懒汉，而胜利永远属于攀登高峰的人。”下列各句与之意思相近的是（  ）
①有毅力者成，反者败
②己所不欲，勿施于人
③锲而不舍，金石可镂
④不受百炼，难以成钢