下列说法中不正确的是（ ）
A：噬菌体侵染细菌实验比肺炎双球菌体内转化实验更具说服力
B：染色体结构的变异会使染色体上基因的数目或排列顺序发生改变
C：DNA中的G与C之和占全部碱基数的比例与其在一条链中所占比例不相等
D：加热杀死的S型肺炎双球菌和活的R型肺炎双球菌的混合物可使健康小鼠死亡
Hello! Nice to meet you. Now let me introduce myself (自我介绍) to you. My name is Mary. I'm 12 years old. I'm from Canada and I speak English. I'm a tall girl. I have long brown hair and big blue eyes. I like music a lot. I often sing songs with my friends in my free time. I have a happy family. There are four people in my family. They are my mom, my dad, my sister and me. I like China very much and I want to visit Beijing, but I can't speak Chinese at all.
I hope (希望) to be your friend, then we can help each other with English and Chinese.
根据材料内容，选择最佳答案。
从右栏中选择与左栏对应的答语。
①How old is Wang Liang?____ A. It's a map.
②Are those your friends?____ B. They are rulers.
③What's that in English?____ C. I'm in Class Five.
④What are those?____ D. No, they aren't.
⑤What class are you in?____ E. He is nineteen.
填写单位：玉林同学身高170 ____，温水的温度为50 ____．液体体温计是利用液体 ____的性质制成的．
