题目内容

The basic flag of the United States is one of the world’s oldest national flags. Only the basic flags of Austria, Denmark, Great Britain, the Netherlands, Sweden, and Switzerland are older. During the discovery and settlement of what is now the United States, the flags of various European nations were flown over the land, as symbols of possession. Later, in the Colonial and Revolutionary War periods, flags representing famous persons, places, and events were flown in the American Colonies. The first official flag of the United States was created by Congress on June 14, 1777. It consisted of 13 alternate red and white stripes and 13 white stars in a field of blue, representing the 13 colonies that had declared their independence in 1776. Congress adopted a new flag of 15 stars and 15 stripes in 1795, to give representation to the two new states admitted into the Union, Vermont and Kentucky. By 1817, there were 20 states in the Union, and it became apparent that adding one stripe for each new state would destroy the shape of the flag. As a result, Congress in 1818 restored the original design of 13 stripes and provided that each state was to be represented by one star. In 1912 President William H. Taft made the first official provision for the arrangement of the stars. He ordered that there be six even rows of eight stars each. Previously the arrangement of the stars had been left to the flag-maker’s fancy. The evolution of the Stars and Stripes reflects the growth of the United States. After the admission of Hawaii into the Union in 1959, the flag was officially changed for the 26th time since its creation. There are many government flags flown in the United States in addition to the national flag. Among them are the president’s and vice president’s flags and those of the federal departments and some federal agencies. Each state in the Union has an official flag. The United States Navy uses special flags for signaling. Before the War of Independence, the flags of various European nations flown over the land were symbols of ______.

A. self-rule
B. occupation
C. peace and friendship
D. independence

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下列关于曲普瑞林的药理作用描述错误的是:

A. 可短暂兴奋FSH与LH分泌
B. 后期产生弱的抑制作用
C. 给予1次缓释针剂可维持30天
D. 可使血清激素水平达到去势水平
E. 以上均不正确

有关前列腺素E1的描述,正确的是:

A. 不引起持续异常勃起
B. 阴茎海绵体内注射前列腺素E1和罂粟碱疗效相似,但并发症较少
C. 能与阴茎海绵体平滑肌PGE1受体结合,激活鸟苷酸环化酶
D. 主要用于治疗血管性勃起功能障碍
E. 阴茎海绵体内注射前列腺素E1可实现靶向治疗

排卵后形成的黄体可以分泌哪种激素

A. 雌激素
B. 孕激素
C. LH
D. 雌激素和孕激素
E. 雌激素、孕激素和LH

雌二醇的用法错误的是:

A. 替代治疗,肌内注射0.5~1.5mg/次,2~3次/周
B. 绝经妇女可用外用凝胶剂2.5g
C. 连用24天,自第13天开始加口服黄体酮100mg/d,连用12天,休息1周,再重复治疗
D. 连用24天,自第13天开始加口服黄体酮100mg/d,连用20天,休息1周,再重复治疗
E. 退乳,肌内注射4mg/d,连用3~5天

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