发现行星运动定律的天文学家是：( )A．开普勒 B．伽利略 C．哥白尼 D．张衡
题型：单项选择题
问题：
发现行星运动定律的天文学家是：( )
A．开普勒
B．伽利略
C．哥白尼
D．张衡
题型：单项选择题
阅读下面短文，并借助上下文和插图补充所缺信息。每个空只能填写一个形式正确、意义相符的单词。
One day my uncle was (1)______ a newspaper and learned that (2)______ were our friends. We should
get (3)______ well with them. He looked at his nice bird in the cage, and decided (4)______ let it fly back
home nature. He took the cage with the bird in it and went to a little hill near his house by (5)______. He
(6) ______ the door of the cage, and the bird (7)______ away quickly. Seeing this, my uncle felt very happy.
He went home with the empty (8)______. When he got back, he sat in a chair and (9)______ a rest. A
moment later , to his (10)______, he found the bird back in the cage.