用度、分、秒表示64.25°=______°______′______″.
64.25°=64°+0.25×60′=64°+15′=64°15′0″.
故答案为:64°15′0″.
眼底黄斑萎缩性病变呈牛眼状()。
A.Stargardt病
B.Best病
C.锥体营养障碍症
D.视网膜色素变性
E.视网膜劈裂症
根据中文提示写出单词或词组,使句意完整、正确。
小题1:If you want to speak English well, you need to __________( 训练/练习)it every day.
小题2:-Will you _________(采/摘)some flowers for the dinner table??
-Good idea!
小题3:-What are you going to be when you ___________( 长大)?
- I want to a doctor.
小题4:- Bill fell _________(病)yesterday.
-I’m sorry to hear that..
小题5:-How many _________(小时) do you spend on your homework every day?
-About three