2006年3月23日央视报道，中科院离子物理所经过八年的艰苦奋斗努力，终于率先建成了世界上第一个全超导的托克马克试验装置并调试成功；这种装置被称为“人造太阳”（如图1所示），它能够承受上亿摄氏度高温且能够控制等离子态的核子发生聚变并稳定持续的输出能量，就像太阳一样为人类提供无限清洁的能源。在下列核反应方程中有可能是该装置内部所进行的核反应的是（   ）

阅读短文，根据短文内容回答下面的问题。

    What do you do on weekends? Some people like to stay at home, but others like to leave home and do other things. My friend, Tom works hard in a factory. He has a son and a daughter.

    On weekends, he usually does the same things. On Saturdays he washes his car and clothes. On Sundays, he goes to a farm with his family by car. His parents live there. The farm isn't very big, but there're often many things to do on the farm. The children help feed (饲养) the animals. There are many animals on the farm. You can see sheep, cows, horses and pigs. Tom and his wife help in the fields. At the end of the day, children are very tired and hungry. Tom's mother gives them a big meal. They are very happy.

反比例函数的图象在第二、四象限，则m的取值范围为         ．

下面现象说明“线动成面”的是（　　）

在河北民歌《小放牛》中有这样的歌词“赵州桥什么人儿修”，对唱是“赵州桥鲁班爷爷修”，其实对唱并不符合历史．如果由你来对唱，歌词可以改为（    ）