题目内容：

Mr. Baker has two children. One is a boy called Peter and the other is a daughter called Rose. Peter is an eleven-year-old boy. He studies at school. Rose is four and stays at home.

One day, Mr. and Mrs. Baker went to their small shop and left their children at home. Peter had some homework to do. At five to nine he brought out his exercise-books. He began to do it in his father's study. About twenty minutes later his sister came in. She found a piece of paper and began to write something on it.

"What are you doing there, Rose?" asked Peter.

"I'm writing a letter," answered the girl.

“Oh? To whom?”  

“To my friend Jo.”

"How can you?" Peter asked surprisingly. “You can't write at all, you know.”

"It doesn't matter," Rose said calmly（平静地）. "Jo is as old as me. She doesn't read, either!"

1.Mr. Baker is a ________.

A. shopkeeper    B. bookseller    C. milkman    D. policeman

2.Rose stays at home because ________.

A. she's ill    B. she’s a girl

C. she’s too young    D. her parents are poor

3.The underlined word "study" in the second paragraph means ________.

A. 学习    B. 研究    C. 书房    D. 学科

4.Rose's friend Jo is ________ years old.

A. four    B. five    C. six    D. three

5.Peter was surprised because ________.

A. Rose can write a letter.    B. Jo can read a letter.

C. Rose said she was writing a letter.    D. Rose said Jo couldn't read a letter.