为了防控甲型H1N1流感，某校积极进行校园环境消毒，购买了甲、乙两种消毒液共10

发布时间：2017-04-17 19:34 │ 来源：www.tikuol.com

题型：解答题

问题：

为了防控甲型H1N1流感，某校积极进行校园环境消毒，购买了甲、乙两种消毒液共100瓶，其中甲种6元/瓶，乙种9元/瓶．

（1）如果购买这两种消毒液共用780元，求甲、乙两种消毒液各购买多少瓶？

（2）该校准备再次购买这两种消毒液（不包括已购买的100瓶），使乙种瓶数是甲种瓶数的2倍，且所需费用不多于1200元（不包括780元），求甲种消毒液最多能再购买多少瓶？

考点：二元一次方程组的应用一元一次不等式的应用

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阅读下列短文，从文后各题所给的四个选项中选出一个最佳答案。
We were going to play a team from a country school .They didn’t come the match nearly began .They looked than we thought .The wore dirty T-shirts and blue jeans and looked like farm boys .We thought they saw a basketball before .We felt that we didn’t any practice to play with such a team .It was very late so they couldn’t have any time to practice .The match began ,one of our boys the ball and he tried to give it to another one . But from out of nowhere a boy in a T-shirt the ball and he quickly and beautifully got the ball into our basket and had two points .They us .They had another two points in a minute .Soon it was all over .The country team the match .Of course we knew that there was still another team than any good team .But the important lesson we learn this time was : One can’t tell a man or a team by the .

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E.小颗粒型复合树脂有光洁的表面和良好的色泽稳定性，广泛用于前牙

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