写出一个在三视图中俯视图与主视图完全相同的几何体____．

2014年是邓小平同志诞辰110周年，中国网和中央档案馆联合推出专题《档案天天看——邓小平档案》。请阅读部分档案资料，结合所学知识回答问题。

下列不属于鸟类繁殖行为的是 (     )

1933年8月4日，苏联某杂志写道：“美国的商业和科学与布尔什维克的智慧相结合，在三四年内已经产生了巨大的效果……”下面理解正确的是

    My name is Jim. My favorite day is October 18th, because it's my birthday. I am very happy on that day. I eat eggs for breakfast. Then my friends come to my home and play with me. We sing and dance. Someone plays the piano and someone plays the guitar. Lunch is very nice. After lunch, my parents take me to see a movie. My favorite movies are action movies(动作片). After supper, my parents, my sister and I watch TV. Then I go to bed at ten thirty. I don't do my homework on that day. I am very tired but happy on my birthday.