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（8分）学好化学能使我们更好地认识各种现象，更合理地解决实际问题，更轻松地应对生活中可能出现的突发事件。 (1)下图是探究铁制品锈蚀的条件时做的五个实验（铁钉在不同环境中），实验一段时间后，发现甲、乙、戊中铁钉生锈快慢的顺序为 ____ ____ ，通过这五个实验可以得出的结论是： ____ ____ 。 (2)不同的火灾所采取的灭火方式也有所不同。如扑灭火势凶猛、蔓延迅速的森林火灾时通常采取的方法是 ；扑灭用电线路老化而引起的火灾时 ，再进行灭火。 (3)下图是A、B、C三种物质的溶解度曲线，根据下图回答下列问题： ①30℃时向两个有100g水的烧杯中，分别加入A、B两种物质至不能溶解为止，溶液的溶质质量分数较大的是 溶液（填“A”或“B”）。 ②将10℃的A、B两种物质的饱和溶液降温至0℃，析出固体的质量大小是A B（填“>”，“③将30℃A、B、C饱和溶液降温至10 ℃，所得溶液溶质质量分数由小到大的顺序是 。 ④A物质的饱和溶液中含有少量B物质，通过 方法可以提纯其中的A物质。
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raise
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B.
On the contrary
C.
In effect
D.
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【单选题】A common assumption about the private sector of education is that it caters only to the elite. 【C1】______ recent research points in the opposite direction. If we want to help some of most 【C2】______ g...
A.
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difficult
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modest
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