问题
解答题
动动小脑筋.
将6张卡片涂上红、蓝两种颜色,要使翻出红色的可能性比蓝色的大,应该怎样涂?
答案
因为将6张卡片涂上红、蓝两种颜色,并且使翻出红色的可能性比蓝色的大,
所以6张卡片中必须有大于3张的卡片涂成红色;
可以是:红色的4张,蓝色的2张,或者红色的5张,蓝色的1张.
动动小脑筋.
将6张卡片涂上红、蓝两种颜色,要使翻出红色的可能性比蓝色的大,应该怎样涂?
因为将6张卡片涂上红、蓝两种颜色,并且使翻出红色的可能性比蓝色的大,
所以6张卡片中必须有大于3张的卡片涂成红色;
可以是:红色的4张,蓝色的2张,或者红色的5张,蓝色的1张.
从方框中选择恰当的句子完成对话。 | |
B: I've got a sore throat and a headache. A: Do you feel tired ? B: Yes, my whole body feels weak. 2 A: I'm sorry to hear that. I'll have to examine you. Open your mouth wide so that I can look at your throat. Yes. It's very red, I'll have to give you an injection. B: 3 A: An injection is better than pills. B: Are you sure? 4 A: But you'd better have an injection first. It is more helpful. B: OK. 5 A: Probably, if you take a rest today. B: Good. |