题目

用介词或副词填空 1. I can’t hear the radio very well. Can you turn it ___________ a bit? 2. The club was so noisy that we had to shout ___________ the top of our voice. 3. She goes to the greengrocer’s in the afternoon and buys the vegetables ___________ a lower price than in the morning. 4. He wrote a letter to apply ___________ the job he read in the newspaper ad. 5. It’s considerate of the hospital to provide a playroom ___________ the children. 6. We would welcome your comment ___________ our work. 7. It’s ___________ the traffic rules to park here. You’ll get a（2004•北京）列方程或方程组解应用题：某山区有23名中、小学生因贫困失学需要捐助．资助一名中学生的学习费用需要a元，一名小学生的学习费用需要b元．某校学生积极捐助，初中各年级学生捐款数额与用其恰好捐助贫困中学生和小学生人数的部分情况如下表：（1）求a、b的值；（2）初三年级学生的捐款解决了其余贫困中小学生的学习费用，请将初三年级学生可捐助的贫困中、小学生人数直接填入表中．（不需写出计算过程）