In a small village, there is a teacher, a doctor, a driver, and a policeman. The four men are good friends. What are their names？One is Tom, one is Jack, one is Mike and one is John. Mike's, Jack's and Tom's children are classmates. John has no children. He teaches his friends’children at a middle school. Mike works at a police station. He loves his job very much. Jack has a car. He often drives his car to go to work or visit his friends. The doctor's house is next to the driver's, so the children often play together.

读图，下列说法中，正确的是（　　）

一边……一边……   不但……而且……    只要……就……    因为……所以……

尽管……还是……   虽然……但是……   只有……才……

①音乐____能给人美的享受，____能陶冶人的性情。

②____今天下雨，____不能上华山了。

③____我们认为是对的事情，____要坚持下去。

④张强在家里____看书，____写作业。

⑤刘杰____学习好，____他从不骄傲

⑥____保护地球，我们____能健康快乐地生活。

下列实验现象、操作或反应原理的解释正确的是（　　）