从1989 年下半年开始，东欧各 * * 党、工人党纷纷丧失 * * ，社会制度也随之发生变化，国家名称也改变了。对此，邓 * * 说过：“东欧的事件对我们来说并不感到意外，迟早要出现的。”根据所学知识判断，东欧剧变发生的根本原因是[ ]
A.高度集中的政治经济体制的弊端
B.戈尔巴乔夫改革的影响
C.西方国家
D.对困难估计不足，经济改革停滞不前
答案：A
My aunt works in Beijing. I visited her during last summer vacation. Beijing is a beautiful city. A lot of foreigners go sightseeing there. My aunt and I got up early on Saturday morning and we went to the Great Wall by car. We returned to the center of the city at four and visited the Palace Museum. The next morning we went to the Summer Palace by bike. That afternoon, we rode to the Beijing Zoo. We saw pandas there. And after supper we took a bus to Beihai Park. We were tired, but I think we had a good time there. 根据上述短文内容，完成下列表格。
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