题目

将函数的图象向右平移个单位长度，所得图象过点，则的最小值为（ ）A. 1 B. 2 C. D. 答案：【答案】A【解析】求出平移后的函数，由，得到，由此即可求出的最小值函数的图象向右平移个单位长度得到函数 由于，即当时，取最小值为1故答案选ABarry is having a very difficult time in his life. His wife recently died from illness. He is very sad. Barry’s neighbor, a very old woman named Gertrude, sees him from her yard one day. She has not seen him outside for days! “Hello, Barry! Just look at this fence(篱笆). It is broken. You are a strong man, and you have some free time. I want you to fix this fence for me,” Gertrude says. Barry is angry. He thinks the old lady is very selfish（自私）.Still, he knows she is a nice woman, and he respects （尊重）her. So he agrees to help her. Barry works for days. Gertrude brings him orange juice while he works. When he finishes, he smiles for the first time in months. “You did such a wonderful job. Do you think you could paint it for me?” Gertrude smiles at him .Barry cannot believe his ears. Doesn’t she know how sad he is? But because he respects her so much, Barry agrees. He works hard in the hot sun, but Gertrude's orange juice and encouragement are wonderful. He feels proud of the beautiful fence he is making. Over the next few weeks, Gertrude keeps giving Barry jobs. He even repairs her door. All the neighbors pass by and tell Barry what a beautiful job he has done. He finally realizes that she has never been impolite. She is really wise and kind. He knows that simply getting busy at something can take sorrow away. He helps her, but she truly saves him.【1】Why does Barry agree to help Gertrude to fix the fence?A. Because he thinks she is too old. B. Because he has nothing to do.C. Because he is strong enough. D. Because he respects her.【2】What does Gertrude bring Barry while he works?A. Coffee. B. Orange juice. C. Coco Cola. D. Ice cream.【3】Barry does a lot for Gertrude, but he doesn’t ________for her.A. fix the fence B. paint the fenceC. buy orange juice D. repair the door【4】The underlined word “sorrow” means________ in Chinese.A. 愤怒 B. 遗憾 C. 悲伤 D. 喜悦【5】From the text，we can learn that Gertrude is__________.A. selfish B. impolite C. helpless D. wise