如图，设椭圆C₁： $\frac{x^2}{a^2}$ + $\frac{y^2}{b^2}$ =1（a＞b＞0），长轴的右端点与抛物线C₂：y²=8x的焦点F重合，且椭圆C₁的离心率是 $\frac{\sqrt{3}}{2}$ ．

如图是元素周期表的框架图，请根据下面提问回答：

如下图所示，视野中除了细胞外还有很多异物，转换物镜和移动装片时异物均不动。据此可判断异物存在于     （   ）

美苏“冷战”开始的标志是                                          

    Before you go to another country it is a great help if you know the language and some of the customs of the country.
    When people meet each other for the first time in Britain, they say “How do you do?” and shake hands. Usually they do not shake hands when they just meet or say goodbye. But they shake hands after they haven't met for a long time or when they will be away from each other for a long time.
    Last year a group of German students went to England for a holiday. Their teacher told them that the English people hardly shake hands. So when they met their English friends at the station, they kept their hands behind their backs. The English students had learned that the Germans shake hands as often as possible, so they put their hands in front and got ready to shake hands with them. It made both of them laugh.