问题
填空题
已知x2=25，y3=8，则x+y=______．
答案
∵x2=25，y3=8，
∴x=±5，y=2，
当x=5时，x+y=5+2=7；
当x=-5时，x+y=-5+2=-3．
故答案是：7或-3．
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已知x2=25，y3=8，则x+y=______．
∵x2=25，y3=8，
∴x=±5，y=2，
当x=5时，x+y=5+2=7；
当x=-5时，x+y=-5+2=-3．
故答案是：7或-3．
| 从方框里选出适当的句子完成对话。 | |
| After school Jim and Lin Tao go to a food shop near their school. They want to buy something to eat and something to drink. Jim: Hi, Lin Tao. 1 Lin Tao: Yes. I am thirsty now. Jim: 2 Lin Tao: I'd like a bottle of water,please. Jim: 3 Lin Tao: No, thank you. I'm not hungry. 4 Do you want something to eat? Jim: Yes. I'm hungry now. I'd like some biscuits (饼干). Woman: 5 . Jim: A small box, please. And a bottle of orange juice. Woman: 6 Jim: No, that's all. Woman: Here you are.
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