唯物史观全面揭示了人类社会历史发展的动力系统。历史发展的根本动力是（     ）

急性根尖周炎最有效的应急处理是

生用镇静安神，平肝潜阳，煅制收敛固涩的药物是

慢性支气管炎急性发作期最重要的治疗措施是

属于抗雌激素类的抗肿瘤药是（   ）

初产妇，26岁。产后发热3天，汗多伴下腹阵痛。查体：体温37.5℃，子宫底脐下3指，无压痛，会阴伤口无肿胀及压痛，恶露暗红、腥味，双乳胀、有硬结。该产妇腹痛的原因是（）

肾上腺素对血管作用的叙述，错误的是

下列中枢性镇咳药中，镇咳作用最强的药物是（    ）

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 _______.

根据《生产经营单位生产安全事故应急预案编制导则》（ＧＢ／Ｔ２９６３９—２０2 0 ），生产安全事故应急预案在评审后的修改完善阶段，下列说法正确的是（   ）。

治疗输卵管妊娠未破损期，应首选的方剂是