B
This big-sister thing wasn't pleasant. I was five, and my sister Lisa was two years younger. Every time we did something we shouldn't do, I got into more trouble. It seemed everybody paid attention to her. One day I was playing with the kids next door and found out that in other people's houses, the older kids had later bedtimes.
Going back with my new-found information, I asked my mother to make a change, but she said no. So I went to my room and started to pack. Into the suitcase went my books and some toys. Putting some more clothes into it, I went downstairs.
Mum looked up and asked if I was running away. When I told her yes, she wasn't nearly as upset as I expected."Are you going to Grandma Sylvia's?" I couldn't believe she would know this. She was like a witch. Without answering her, I went out, pulling the suitcase with great difficulty, not knowing Mum was following behind.
Finally, I got to Grandma's house about two kilometres away. Before I knocked, the door opened. Grandma told me she was happy to see me, and I realized Mum had already called ahead. Soon Mum came in, sat in my grandmother's chair, took my hot little face in her hands and said,"Sweetheart, I don't want you to be so unhappy. If it's hard for you to live with Lisa, tomorrow I'll call the orphanage and send her away."
Knowing what an orphanage was, I started to cry."Don't send my sister away!" Mum unwillingly agreed that we would all go home and give it another try.
That night, Mum fed us, gave us a bath and sent us to bed at the same time. In the following years, Lisa and I would have a fight once in a while. To this day, if I turn over my shoulder and say,"Mum, Lisa's being mean to me!" Mum always answers in the same way: "You had your chance."
()19. Why did the writer want to run away from home?
A. Because Lisa always made her get into trouble.
B. Because Lisa had later bedtime.
C. Because her mother paid no attention to her.
D. Because she thought she was treated differently.
()20. Why did the girl think Mum was like a witch?
A. Mum didn't care about her leaving.
B. Mum refused to make a change.
C. Mum knew where she was going.
D. Mum knew Grandma was waiting for her.
()21. What does the mother want to tell the girl by saying "You had your chance"?
A. She should try to fight back.
B. She can run away from home again.
C. She can still send Lisa to the orphanage.
D. She should learn to get along well with Lisa.
()22. What is the main idea of the passage?
A. How the writer learnt to love her sister and accept her role as a big sister.
B. The writer's unhappy childhood with her sister.
C. A funny story about a mother and her two daughters.
D. Why the writer wanted to go to Grandma's house.

19.D 20.C 21.D 22.A

【分析】
做这类英语阅读理解题，需先通读全文理解主旨，再针对每个题目回到原文定位关键信息，逐一比对选项得出答案。
19题：需找作者离家的原因，原文提到作者因总被关注妹妹、要求调整作息被拒，觉得自己被区别对待；
20题：找作者觉得妈妈像女巫的原因，原文明确是妈妈知道她要去奶奶家；
21题：理解妈妈最后说的话，结合前文作者想送走妹妹的经历，妈妈是想让作者学会和妹妹相处；
22题：概括全文主旨，从作者不满当姐姐到学会和妹妹相处的过程。
【解析】
19题：根据第一段，作者每次做错事更受罚，大家关注妹妹，发现别家大孩子晚睡要求改被拒，觉得被区别对待，对应选项D；
20题：第三段作者离家时，妈妈直接问“Are you going to Grandma Sylvia's?”，作者惊讶妈妈知道她的去向，所以觉得妈妈像女巫，对应选项C；
21题：最后作者又告状，结合前文妈妈提出要送妹妹去孤儿院，作者哭着反对，妈妈说“You had your chance”是想让作者学会和妹妹相处，对应选项D；
22题：全文讲述作者从不满当姐姐，到妈妈调整相处方式，最终学会和妹妹相处的过程，对应选项A。
【答案】
19.D 20.C 21.D 22.A
【知识点】
阅读理解，细节理解题，主旨大意题
【点评】
本文是一篇记叙文，通过作者与妹妹的成长故事，考查学生对文章细节的定位能力和主旨的概括能力，贴近学生生活，易于理解。
【难度系数】
0.5