阅读理解。
My friend Larry has a big dog. Its name is Johnny. Johnny is very smart. Every Sunday afternoon Larry
takes Johnny for a long walk in the park. (A) The dog likes walking very much. One Sunday afternoon a man
visited Larry. He talked with Larry for a long time. It was time for Larry to take Johnny for a walk. But the
man still stayed there. Johnny became (变得) very worried (焦虑的) about his walk in the park. He Walked
about in the living room, and then sat down in front of the man. But the man went on talking.
After thirty minutes. Johnny couldn't stand the man. He went out, and after a few minutes he came back.
(B) He sat down in front of the man again (再次), with the man's bag and hat in his mouth!
1. What does Larry do every Sunday afternoon? (简要回答)
_______________________________________________________
2. Why did the dog take the man's bag and hat in his mouth? (简要回答)
_______________________________________________________
3. Who got worried? (简要回答)
_______________________________________________________
4. 将(A) 句译成汉语。
_______________________________________________________
5. 将(B) 句译成汉语。
_______________________________________________________
，方向水平向右的匀强电场。当粒子到达B点时，速度大小仍为v，但方向变为水平，（重力加速度为g）求
