正确答案: C

雨后彩虹

题目：下列现象，属于光的色散现象的是

解析：C

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学习资料的答案和解析：

[多选题]—It’s cold today. You’d better _________ your sweater. 学科网 —OK. I will.学科网

—It’s cold today. You’d better _________ your sweater. —OK. I will.

p—It’s cold today. You’d better _________ your sweater.

put on B．turn on C．get on

[单选题]20．

He ．

解析：20．A【解析】考查代词，此处应用人称代词he 代替上句中的brother．

[单选题]Not all people like to work but everyone likes to play． All over the world men and women，boys and girls enjoy (21) ． Since the days of long ago，adults(成年人) and children have called their friends together to spend (22) even days playing games．Sports help people to live(23 ) * They help to keep people healthy and feeling good．When they are playing games，people (24) a lot． This is good for their health． Having(25) with their friends makes them happy．

sports

解析：21．C【解析】此题与下一句中的“playing games”有关系．play games是“运动”，选项为C。