①和平与发展的时代主题促使了中柬的发展

②两国的共同利益是中柬发展的基础

③两国一致的根本利益推动了中柬合作

④和平外交政策是中柬外交政策的基调

根据句意及所给提示补全单词或用所给单词或短语的适当形式填空。

如图，△ABC的面积为1．第一次操作：分别延长AB，BC，CA至点A₁，B₁，C₁，使A₁B=AB，B₁C=BC，C₁A=CA，顺次连接A₁，B₁，C₁，得到△A₁B₁C₁．第二次操作：分别延长A₁B₁，B₁C₁，C₁A₁至点A₂，B₂，C₂，使A₂B₁=A₁B₁，B₂C₁=B₁C₁，C₂A₁=C₁A₁，顺次连接A₂，B₂，C₂，得到△A₂B₂C₂，…按此规律，要使得到的三角形的面积超过2017，最少经过多少次操作（   ）

根据材料并结合所学知识回答问题。

材料

     1981年，美国政府采取新遏制战略，“以实力求和平”。1982年，美苏开始了削减进攻性战略武器的谈判，但因美国在西欧部署中程导弹中止。1985年，苏联着手调整外交政策，美国推行新的缓和战略，双方重开谈判。1988年底，美苏达成了削减进攻性战略武器的初步协议。

    1991年7月，历经9年谈判，美苏签订了《削减进攻性战略武器条约》，规定双方削减核力量的1／3，各拥有1600件战略武器运载工具，苏联要从现有导弹中减少36％，美国减少29％：苏联减少现有弹头的41％，美国减少43％。

                                                                                                                                               ——据方连庆等主编《战后国际关系史》

阅读短文，用方框内所给单词的适当形式填空，使短文意思通顺、完整。（注意：①每个单词只能用一次。②其中有两个多余选项。）

    I went to the doctor's yesterday ____ I had a bad cold. I have ____ for three days, so I had a sore throat. When I got there,m there were many people ____  inline. I had to join the line at the end. But the man who was in front of me was____  there. The smoke made me sick. I wanted to stop him but I was afraid he would get____ . But I really couldn't stand it. So I told him ____ , “Would you mind smoking outside?” After hearing what I said, the man threw the____  on the ground and said to me, “Sorry.”I thought it was bad to do so, but I said ____ and picked up the cigarette. Seeing what I was doing, the ____  face turned red and felt very sorry about ____ he did. He turned to me and said, “You are a good girl. I won't do that again.”