一个数从右边起第一位是____位，第二位是____位，第三位是____位。

如图是某校学生制作并观察某细胞临时装片的相关图片，请分析回答：

在数列$\left\{a_n\right\}$中，$a_{n+1}=a_{n+2}+a_n$，$a_1=2$，$a_2=5$，则$a_6$的值是  (    )

根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    My name is Linda. Amy is my best friend. She 1 long straight black hair and two big black eyes. 2 nose is very small. She is beautiful.

    She is 3, too. Amy likes animals, so she 4 helps her grandparents take care of (照顾) their cat and dog. She is also a 5 student in my class. She studies very hard 6 she often helps other students. After school, we often play together. We 7 swimming very much, so summer is our favorite season.

    She is not the only 8 in her family. She has a sister of only three years old. Her name is Lucy. Lucy is a cute girl. She 9 me sister the first time. When we go to the park, she wants to go to the 10, too. When we read at home, she wants to read, too. How funny!