My class is like (像) a big1. I like all my2. I have3friends in my class. One of them is Suzy, a girl from Nanjing. But now she lives4Yangzhou.

    Suzy is a good student. She learns (学) all her5well. Her favourite thing is6. She thinks books are like food and help her7lot.

    8Wednesday afternoons, she always9to a nursing house (敬老院). Sometimes she10with the old people there. Sometimes she plays some music for them. They enjoy11o Beijing Opera (京剧) very much.

    Suzy is also a good12. She thinks Yang Liping is one of the best dancers in the world. So she often13Yang's shows on TV. Her great dream14 to see Yang Liping, though（尽管）she knows it is15 .

对于二倍体生物来说，下列基因组合不是配子的是（　　）

 同学们用如图所示的装置探究冰熔化时温度的变化规律．