图示为氢原子的能级图,下列说法正确的是( )
A:氢原子从较高能级跃迁到较低能级时,释放一定频率的光子,核外电子动能增加,电势能减小
B:氢原子从n=3能级跃迁到n=4能级时,需要吸收的光子能量必须大于0.66eV
C:氢原子处于不同能级时,核外电子在各处出现的频率相同
D:一个处于n=4能级的氢原子向低能级跃迁时,可以释放6种频率的光子
电视已经走进了千家万户,是我们生活的重要组成部分。每个人都有自己最喜爱的电视节目。下面是五个人的描述,请根据他们的描述从A-F中为他们选择合适的电视节目____ I am 73 years old. I often watch TV in my free time. Of all the programs, I like the news best. Through the TV, I can learn what is happening in our country and in the world. At seven every evening , I always sit in front of the TV.____ I am a grandma. I like Chinese traditional opera. From Monday to Thursday, I usually turn on the TV at half past seven. The programs from CCTV7 are my best.____ I am a basketball fan. I like playing basketball very much. But I am too busy. So I have to watch it on the TV. Every night, I watch the match till midnight.I am crazy about it , especially NBA____ I am a housewife. I do the housework all day, I'd like to watch TV at night. I prefer to see soap operas like ‘palace”, “meteoric garden” and so on.Because they can make me feel relaxed.____ I am the only son in the family. I am in Grade Five. I like cartoons best. I often watch cartoons on the TV after doing the homework. A B C D E F.
淘气看到的是 。