男，80岁。高血压病史30年。体格检查：BP180/50mmHg，P70次/分，该患者脉压异常的最可能原因是（   ）。

西地那非引起的不良反应(   )。

数学课上，李老师正津津有味地讲解例题，小雨站起来兴奋地说：“老师，我想了一个更简便的方法！”李老师眼一瞪，说：“就你聪明！赶紧坐好，认真听课！”下列关于李老师做法的表述，不正确的是（）。

后头部连项痛者，多属

（  ）是我国股权投资基金的监管机构。

患者女，58岁。2年前出现精神抑郁，情绪不宁，胸部满闷，胁肋胀痛，痛无定处，脘闷嗳气，不思饮食，大便不调，苔薄腻，脉弦。此病证候诊断是

Passage1

In many of the developing countries in Africaand Asia, the population is growing fast. The reason for this is simple: Womenin these countries have a high birth rate - from 3.0 to 7.0 children per woman.The majority of these women are poor, without the food or resources to care fortheir families. Why do they have so many children? Why don't they limit thesize of their families? The answer may be that they often have no choice. Thereare several reasons for this.

Onereason is economi

In atraditional agricultural economy, large families are helpful. Having morechildren means having more workers in the fields and someone to take care ofthe parents in old age. In an industrial economy, the situation is different.Many children, do not help a family; instead, they are an expense. Thus,industrialization has generally brought down the birth rate. This was the casein Italy, which was industrialized quite recently and rapidly. In the earlypart of the twentieth century, Italy was a poor, largely agricultural countrywith a high birth rate. After World WarⅡ, Italy's economy was rapidly modernized and industrialize

By theend of the century, the birth rate had dropped to 1. 3 children per woman, theworld's lowest.

However,the economy is not the only important factor that influences birth rate. SaudiArabia, for example, does not have an agriculture-based economy, and it has oneof the highest per capita incomes in the worl

Nevertheless,it also has a very high birth rate. Mexico and Indonesia, on the other hand,are poor countries, with largely agricultural economies, but they have recentlyreduced their population growth.

Clearly,other factors are involve

Themost important of these is the condition of women. A high birth rate almostalways goes together with lack of education and low status for women. Thiswould explain the high birth rate of Saudi Arabia. There, the traditionalculture gives women little education or independence and few possibilitiesoutside the home. On the other hand, the improved condition of women in Mexico,Thailand, and Indonesia explains the decline in birth rates in these countries.Their governments have taken measures to provide more education andopportunities for women.

Anotherkey factor in the birth rate is birth control. Women may want to limit theirfamilies but have no way to do so. In countries where governments have madebirth control easily available and inexpensive, birth rates have gone down.This is the case in Singapore, Sri Lanka, and India, as well as in Indonesia,Thailand, Mexico, and Brazil. In these countries, women have also been providedwith health care and help in planning their families.

Thesetrends show that an effective program to reduce population growth does not haveto depend on better economic conditions.3 It can be effective if it aims tohelp women and meet their needs. Only then, in fact, does it have any realchance of success.       (495 words)

In Mexico, Thailand, and Indonesia, the government _______.

儿童长期服用后容易出现甲状腺功能异常，影响发育的药物是（    ）

面部“危险三角区”的疖最危险的并发症是（    ）

中国共产党登上历史舞台后,在推进中国革命､建设､改革的实践中,高度重视宪法和法制建设｡我国第一部宪法是(   )年一届全国人大一次会议通过的｡现行宪法是(   )年宪法,最近一次修订是(   )年｡

在Excel中，下列选项中，不属于算术运算符的是（）。