题目

下列条件：①b>0；②b<0；③>0，b>0；④<0，b<0中能使不等式成立的有            （填上正确答案的序号） 答案：①③④ It is Saturday. It is also Ann’s birthday. She wants to    1. a birthday party at home this evening. Yesterday Ann  2. Kate. She invited(邀请) Kate to    3. birthday party. Ann and Kate    4. good friends. Kate was happy to go to her party. She wanted to give(给)  Ann a  5. . So    6. the phone , Kate thought “What gift can I give Ann?” Then she had an idea. She knew Ann liked flowers very    7.. She decided to buy her some    8.. It’s five o’clock now. Kate is in a flower    9.. The shopkeeper is packing(包装) her gift. She is going to Ann’s house. It’s a little far. She wanted to go there by    10.