阅读下列短文，从下面每小题的A、B、C、D四个选项中选出最佳选项。
B
A group of children meet in the library each week during lunchtime. They are famous as the Miss Margaret Fan Club. Every Thursday, the twelve members of the Miss Margaret Fan Club make their way to the study center in the back of the library.
The first Thursday they met, Miss Margaret greeted them with a little talk.
"Welcome to the first meeting of the writing club!" she said. "During the school year, we will meet here to work on story writing. At the end of the year, I will put all of your stories together in a book."
Miss Margaret gave a pencil and two pieces of paper to each student.
"Now, your first homework is to think of a character. Now, try to think about an interesting person. When you think of this person, write down all the details(细节)about him or her in your head. "
上存在不同的三个点
，使得关于实数
的方程
有解（点
不在