正态分布的数值变量资料，描述离散趋势的指标最好选用 A．全距 B．百分位数 C．方差

物质的性质决定它的用途，下列物质的性质与用途对应关系不正确的是[ ]

A．氢气能燃烧--理想燃料

B．活性炭具有吸附性--作净水剂

C．浓硫酸具有脱水作用--作干燥剂

D．氧气具有助燃性--用于气割、气焊

With winter fast approaching, flu season is here. People can easily catch the flu bug and they try to fight it with western medicine, traditional Chinese medicine or some homemade secret recipes. Yet some of these strategies are ineffective or even harmful, the best way to counter the flu is to protect us from contracting（感染）it. So here are some good habits to protect people from contracting flu from the very beginning.

●During the day, keep the bedroom window open to let fresh air in．

●Wash your face with cold water in the morning and wash your feet with hot water in the evening. This practice can help boost blood circulation and improve the body's resistance.

●Do some exercises in the morning. such as jogging or shadowboxing（太极拳)for 10 minutes.

●Rinse(漱) your mouth with salt water or tea every morning and every evening. This can help kill flu bacteria, clear phlegm(痰）and keep the mouth fresh.

●Wear more clothes when it's cold and take some off when it's warm

●Get a bottle of vinegar or Chinese white wine at hand and smell it now and then. Their pungent smell can help people get refreshed and improve their body's resistance.

● Drink two kinds of beverages（饮料）before going to bed, which can help people stay away from the flu: soup made of radish（萝卜）and vinegar, and tea made of fresh ginger（生姜）．

●Close the doors and windows and put a pot of boiling vinegar in the room Vinegar steam is a good way to kill flu bacteria in the air.

小题1: Some people like washing their face with cold water in the morning and washing their feet with hot water in the evening perhaps because______．

A．they want to make themselves handsome or pretty

B．they know it is the best way to kill flu bacteria

C．they think it can strengthen blood circulation and improve their resistance

D．they have developed the good habit of living小题2:According to the passage, we can know that the best way to fight the flu is to ______.

A．take western medicine or traditional Chinese medicine

B．avoid getting it at the very beginning

C．use some homemade secret recipes

D．drink two kinds of beverages before going to bed in winter小题3: What would be the best title for this passage?

A．Eight habits to keep the flu away

B．The cause of contracting the flu

C．Winter and flu

D．How to cure the flu

大众传播媒介是现代文化最重要的代表及塑造者，葛伯纳于是选择了传媒作为他的研究重心，他的文化指针研究共分为三个部份：传媒体系（）分析、传媒讯息系统分析及涵化分析。

A.传播过程

B.制作过程

C.效果产生

D.受众心理

依据《关于解决国家和他国国民之间投资争端的公约》建立的“解决投资争端的国际中心”，对下列哪一争端事项具有管辖权：

A．缔约国和另一缔约国国民因直接投资而产生的法律争端，并经双方书面同意提交中心

B．缔约国和另一缔约国国民因直接投资而产生的法律争端，并经双方口头同意提交中心

C．巴缔约国和另一缔约国民因间接投资而产生的法律争端，并经双方书面同意提交中心

D．缔约国和另一缔约国国民因间接投资而产生的法律争端，并经双方书面同意提交中心

2012年9月14日，中国首部《社会管理蓝皮书中国社会管理创新报告》正式发布。蓝皮书指出：通货膨胀、社会分配不公等社会深层次矛盾日益凸显并有激化的趋势；社会治安形势严峻，无直接利害关系的群体事件或恶性事件出现新的变化。中国贫富差距正在进一步扩大，逼近社会容忍线。

结合材料，说明我国政府应加强哪方面的职能。