This is my family tree. My name is Jack. I'm English. I have a big family. My wife(妻子) Allen is a teacher. We have two children. Tom is my son. Linda is my daughter. They are students in No. 2 Middle School. My father's name is Jeff. My mother's name is Grace. They are at home. Bill is my brother. He is a worker. Nancy is my wife's sister. She is a doctor. My wife's mother's name is Sue. Her father's name is Harry. They are old, too.

⑴____⑵____⑶____⑷____⑸____

76，2，75，3，74，4，____，____

某化学兴趣小组通过查阅资料知道，电解水时生成氢气和氧气的体积比为2∶1，但实验所得数据氢气和氧气的体积比略大于2∶1。针对这一发现，你认为下列说法中不可取的是（   ）

某市2005年～2007年的进口额和出口额统计如下表．