产后血晕虚者病因病机为( ) A．感染邪毒 B．阴亏血少 C．血虚气脱

Now more and more people in the world are getting fatter. This troubles them a lot. Experts(专家) say that it has a lot to do with  our eating habits.

Our eating habits are very important for good health and a strong body. Most of us like eating sweets and ice cream better than vegetables and rice. Sweets and ice cream are not bad for us if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite(食欲).

It's important for us to eat our meal in the same period  each day. When we feel worried or excited, we may not want to eat. A long time ago, in England, some judges(法官) often decided whether a man was telling the truth by giving him some dry bread. If the man could not swallow(吞) the bread, it meant that he wasn't telling the truth. Because when a man is worried about something, he will have trouble in swallowing anything dry, because he loses his appetite.

根据短文内容回答问题

小题1:Are more and more people getting fatter in the world?

小题2:Do most people like eating sweets or rice?

小题3:What may happen to people when they feel worried or excited?

小题4:Why did the judges give some dry bread to the man in old England?

小题5:What are good eating habits?

描述老年人口比重不正确的是（）

A.老年人口比重指65岁及以上的人口占总人口的比例

B.可作为划分人口类型的指标，该指标在7%以上的为老年型人口

C.老年人口比重越大，表明人口越老年化

D.人口的出生率越低、寿命越长，则老年人口比重越高

E.该指标不能反映人群的健康水平

根据国际上的经验，无论是国营还是私营企业，成功的基础设施服务的提供者都首先是按照商业化的原则经营的，并至少具有几个基本特点，下列不是这些基本特点中的一项是( )。

A．由政策职能部门管理并承担其所有责任
B．对提供的基础设施服务有明确、连贯的目的性
C．拥有经营自主权，企业的管理者和生产者都对经营承担一定程序的责任
D．享有财务上的独立性

下列选项中，不适合作为“现代媒体艺术”教学活动的是（）。

A．根据某一题材(如风景、人物、花卉等)进行摄影、摄像活动

B．根据某一专题或社会热点问题，编写脚本并进行拍摄、编辑加工处理

C．配合研究性学习课题的要求，拍摄收集各种素材、资料或案例

D．要求学生用胶片摄影、并用显影和定影的方式在暗房中自己冲印照片

某汽车暖风系统工作时发出液体流动噪声，以下哪项正确？（）

A.发动机冷却系中有空气

B.空调控制板上的冷暖风操纵钮应当检查和调整

C.以上都正确

D.以上都不正确