急性心肌梗死引起的室性心律失常的首选药是(   )

（ ）指民事主体在参与民事活动时，有充分的表达自己真实意志的自由，可以根据自己的意愿设立、变更和终止某种民事法律关系，也称意思自治原则。

在撰写学术论文时，围绕中心论点设立若干个分论点，这些分论点与中心论点是垂直关系，分别论证中心论点，而各分论点之间呈平列关系。这种方法是

下列关于箱梁整孔预制安装的说法，正确的是(    )。

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)

According to this passage, Italy today is an example of an _______.

注射剂是原料药或与适宜辅料制成的供注入体内的无菌制剂。关于注射剂的说法正确的是（ ）

(    )施工时，严控混凝土的配合比，保证其和易性，必要时可适当掺加缓凝剂。

大便先干而后稀是因

我们党领导人民取得革命和建设胜利的法宝是（    ）。

会计机构、会计人员对记载不准确、不完整的原始凭证有权予以退回，并要求经办人员按照国家统一的会计制度的规定进行更正、补充。      （  ）

兼有抑菌作用的鼻用减充血剂是 （   ）。