问题 多项选择题

下列哪些药物可用于治疗黄体功能不足引起的不孕?()

A.黄体酮

B.HCG

C.HMG

D.CC

E.GnRH

答案

参考答案:A, B, C, D

阅读理解与欣赏

阅读下列文段,完成问题。

本领不凡的彩色不锈钢

  ①不锈钢是在冶炼时加入铬、镍等元素而制成的钢铁合金。由于具有不怕酸、碱腐蚀的特性,永远闪烁着银色的光芒,因而受到人们的喜爱。

  ②随着科学技术的发展和人们物质生活水平的提高,科学家又在积极探索和研制彩色不锈钢,以使应用领域进一步得到扩展。现在,德国、英国、美国、日本、印度等国家均已取得显著成果,正在从实验阶段走向商业化

  ③彩色不锈钢是一种新型材料。它的制造过程并不是在不锈钢的表面简单地涂上一层着色剂,就能够产生五彩缤纷的色彩,而要通过十分复杂的工艺过程来实现。目前所采用的方法主要是酸性浴氧化着色法,使不锈钢的表面生成一层透明的铬氧化物薄膜,光线照到上面之后,会因薄膜厚度不同而产生不同的颜色。

  ④对不锈钢进行彩色加工的整个过程包括着色处理和硬膜处理两个步骤。着色处理是在热铬硫酸溶液槽中进行,不锈钢浸入之后,就会在表面生成一层只有一根头发丝直径几百分之一的氧化膜。随着时间的延长和氧化膜厚度的增加,不锈钢表面的颜色也在不断发生改变。当氧化膜厚度从0.2微米增加到0.4微米时,不锈钢表面的颜色会依次呈现蓝、金、红、绿色。人们通过控制浸渍时间,就可以得到所需要的彩色不锈钢。再经过硬膜处理后,就可以在阴极上生成三氧化二铬、氢氧化铬等稳定化合物。既填塞了氧化膜中的微小孔隙,还提高了氧化膜的耐磨性、耐蚀性和耐热性,使材料的整体性能大为提高。

  ⑤彩色不锈钢的研制开发成功,显示了它的优异性能和巨大魅力。在保持固有金属光泽的前提下,更加显得色调艳丽、柔和高雅。这种光泽和颜色经紫外线长时间照射也不会褪去,即使在恶劣的环境中色膜也不会受损。有人将彩色不锈钢在污染严重的地区以及海水中进行长达6年的“暴露”实验,结果仍然完好无缺。经实验,彩色不锈钢在100℃沸水中浸泡28天,或在200℃干燥条件下暴露21天,都能保持原有的色调和光泽。经200℃~300℃高温的短时间处理,它也能够经受考验而不会发生变化。为了证明彩色不锈钢具有良好的耐磨性,人们用5牛顿力摩擦着色氧化膜,经过200次仍没有擦穿。还有人用施加1.2牛顿力的针尖刻划着色氧化膜,结果氧化膜安然无事。此外,彩色不锈钢吸收可见光的能力很强,可以使90%的可见光被转换为热能。

  ⑥由于彩色不锈钢所具有的优异特性,其应用领域十分广泛。可以用于高层建筑、桥梁结构、艺术装潢,还可以进行各种机械加工制造零部件和生产各种家电产品和日用品。特别是在大型建筑设计中采用这种新材料,会使建筑装饰产生从静态到动态的变革。美国得克萨斯州休斯敦市的一幢用彩色不锈钢装饰的21层大楼,由于阳光照射角度的不同,从太阳升起到日落,大楼的色调会发生红、橙、黄、绿、蓝、靛、紫七种颜色的变化,交相辉映,十分壮丽。

1.彩色不锈钢的特征是____________、____________、____________、____________。

2.根据文中提供的信息试简要概括彩色不锈钢的特性。

_________________________________________________________

3.研制彩色不锈钢的方法是①____________,②____________。

4.彩色不锈钢的本领不凡,具有优异性能,表现在____________。

5.第②段最后一句它“正在从实验阶段走向商业化”,试从文中举几个例子来加以说明。

_________________________________________________________

6.文中所用说明方法有哪些?

_________________________________________________________

单项选择题

Should anyone much care whether an American boy living overseas gets six vicious thwacks on his backside So much has been argued, rejoined and rehashed about the case of Michael Fay, an 18-year-old convicted of vandalism and sentenced to a caning in Singapore, that an otherwise sorry little episode has shaded into a certified International Incident, complete with intercessions by the U. S. head of state. An affair has outraged American libertarians even as it has animated a general debate about morality East and West and the proper functioning of U.S. law and order.

Which, to all appearances, is what Singapore wanted. The question of whether anyone should care about Michael Fay is idle. though Singapore officials profess shock at the attention his case had drawn, they know Americans care deeply about the many sides of this issue. Does a teenager convicted of spraying cars with easily removable paint deserve half a dozen powerful strokes At what point does swift, sure punishment become torture By what moral authority can America, with its high rates of lawlessness and license, preach of a safe society about human rights

The caning sentence has concentrated minds wondrously on an already lively domestic debate over what constitutes a due balance between individual and majority rights. Too bad Michael Fay has become a focus for this discussion. Not only does he seem destined to be pummeled and immobilized, but the use of Singapore as a standard for judging any other society, let alone the cacophonous U. S. , is fairly worthless.

To begin with, Singapore is an offshore republic that tightly limits immigration. Imagine crime-ridden Los Angeles, to which Singapore is sometimes contrasted, with hardly any inflow of the hard-luck, often desperate fortune seekers who flock to big cities. Even without its government’s disciplinary measures, Singapore more than plausibly would be much the same as it is now. An academic commonplace today is that the major factor determining social peace and prosperity is culture--a sense of common identity, tradition and values.

Unlike Singapore, though, the U. S. today is a nation in search of a common culture, trying to be a universal society that assimilates the traditions of people from all over the world. Efforts to safeguard minority as well as individual rights have produced a gridlock in the justice system. Its troubles stem more from the decay of family life than from any government failures. Few societies can afford to look on complacently. As travel eases and cultures intermix, the American experience is becoming the world’s.

The circumstances of this affair--evidently no Singaporean has ever been punished under the Vandalism Act for defacing private property--suggest that Singapore has used Fay as an unwilling point man in a growing quarrel between East and West about human rights.

The reaction of the U.S. to the case of Michael Fay could best be described as()

A. big surprise

B. grave outrage

C. great concern

D. heavy agony