制定农村低保标准时是否应该充分考虑当地经济发展水平和财政承受能力，搞好与其他社会保障

Why must we pay taxes The answer is that the government needs money for many things, for example, to pay its soldiers, sailors and airmen, to build roads, bridges, offices, schools, etc, and to buy goods from abroad ; and only the people of the country can supply the money. One of the most important taxes is income-tax which a person pays according to the amount of his income, whether he is a merchant, a doctor, a lawyer, a shopkeeper, a miner or anything else. This is called a "direct" tax, because it is paid in money directly to the government. Another tax is paid on goods such as watches, jewelry, new clothes, tobacco, wine, etc, when they are brought into a country. Such a tax is paid as part of the price of these goods if they are late sold in shops. We call it "indirect" tax, because it is paid indirectly through the shopkeepers. People usually complain about having to pay taxes, but they forget that the money is spent on things that they and their families need. We need policemen to catch thieves, to see that men obey the laws, to direct traffic, etc, and they must be paid what they earn; children need education, and there must be schools and teachers; we want our streets to be kept clean, and the wages of men who do this kind of work have to be paid. Above all, the country must always be ready to defend itself against attacking enemies, and we can’t have an army without paying for it. Besides, if a country wants to develop, there are many other things to do... Taxes, therefore, cannot be avoided. We buy our food and clothes and pay for our amusements; but, there are several things that the State finds the money for, and that is necessary for us if our society is to continue. We have no real reason to complain, therefore, when we are asked to supply money to be spent for the good of ourselves and for our fellow-citizens.

______有产生呼吸节律的基本中枢。

农村妇女，24岁，平素健康，孕足月在家由乡医接生，胎儿娩出后，即流出大量新鲜血，新生儿体重4200g，15分钟后胎盘自然娩出，但一直 * * 持续流血，有血块，转上级医院时，面色苍白，四肢凉，血压8／5kPa（60／40mmHg），脉搏130次／分。弱，经输血1200ml。后，血压回升至12／8kPa（90／60mmHg），给予积极恰当治疗后，病情稳定，出血停止。次日查血常规，血红蛋白7．5g／dL，又输同型血800ml。

并发症最早可出现（）

A.产后6小时

B.产后1周

C.产后1个月

D.产后6个月

E.产后1年

X线束的最短波长取决于

A．毫安
B．时间
C．千伏
D．毫安秒
E．靶物质

某国未清偿外债余额为1200亿美元，国民生产总值为8000亿荚元．货物服务出口总额为1600亿美元，当年外债还本付息总额为400亿美元，则该国外债偿债率为( )。

A．15%
B．75%
C．25%
D．5%