无水酒精（含乙醇99.5%以上）的制法通常蒸馏不能制得纯酒精，浓度为94%～96%时，即为恒沸溶液．工业酒精（96%）→无水酒精（99.5%）的方法 ____

我国社会主义经济制度的基础是（    ）

语法填空

    Writing text messages while walking is dangerous. A study says it is more dangerous than texting while driving. Researchers found that there are more ____ (injury) to texting pedestrians(行人) than there are to texting motorists. Their report says walking is not as easy ____ we think. We must focus on many things at the same time to walk safely in a straight line. The researchers said that people forget how to walk ____ (proper), so dangerous things happen to them. They bump(撞) into walls and other people. They walk into cars, fall over things in the street, ____ even fall into holes.

    A professor said walking is a difficult action. There are several reasons ____ texting makes walking dangerous. ____ is that people cannot see the street. Another is that they focus on their phone keyboard instead of their feet. A final reason is that their minds are somewhere else—they are not thinking about ____ (walk) from A to B safely. The professor said over 6,000 people ____ (visit) his hospital last year because of texting. He said ____ worst cases are head injuries. When a pedestrian is tossed into the air he/she has nothing ____ (protect) the head. The damage can be serious.

    党的十八届五中全会提出将“提高发展质量和效益”作为“十三五”时期我国发展的中心任务。2016年中共中央、国务院出台的《国家创新驱动发展战略纲要》等重要文件中，提出了建设质量强国战略。要求创新质量管理方式，通过简政放权，激发市场主体活力和质量发展创造力；综合运用法治、诚信、风险管理等手段，提升政府质量管理效能；大力推广先进质量管理技术和方法，着力提高劳动者质量技能：综合运用执法打假、集中整治、缺陷产品召回等手段，打一场消费品质量提升攻坚战。

结合材料，运用政治生活知识，分析党在建设质量强国中的作用。