下列有抗组胺作用的药物是（） A.阿托品 B.司可林 C.吗啡 D.哌替啶 E.异丙

同一水田中相邻两株水稻之间争夺养料、水分的斗争叫______，水稻和杂草之间也要争夺养料和水分，而它们之间的斗争叫______．豆科植物为根瘤菌提供养料，根瘤菌也可以通过生物固氮为豆科植物提供氮肥，它们两者之间的关系叫______．

我市于2011年5月15日举办了第四届“黄河口国际马拉松赛”．为保证赛事期间的饮食安全，东营市食品药品监管局要求各餐饮单位严格遵守《国家食品添加剂使用标准》，禁止面粉增白剂“过氧化苯甲酰”等的使用．过氧化苯甲酰（C₁₄H₁₀O₄）是一种淡黄色、微有苦杏仁气味的固体，不稳定、易燃烧、撞击或受热摩擦能爆炸：

（1）过氧化苯甲酰由______种元素组成；

（2）过氧化苯甲酰具有的化学性质是______；

（3）过氧化苯甲酰中碳、氢、氧三种元素的质量比为______．

以下措施（）对减小电网谐波有效。

A.增加换流装置的脉动数，采用12相整流装置

B.在谐波源附近安装高通滤波装置

C.对冲击负荷加装动态无功补偿装置

D.在用户进线处加串联电抗器

目前临床应用最广的评价抑郁症状的自评量表是（）

A.HAMD

B.HAMA

C.SDS

D.HCL-32

E.MDQ

Passage Three

No woman can be too rich or too thin. This saying often attributed to the late Duchess(公爵夫人) of Windsor embodies much of the odd spirit of our times. Being thin is deemed as such a virtue.

The problem with such a view is that some people actually attempt to live by it. I myself have fantasies of slipping into narrow designer clothes. Consequently, I have been on a diet for the better—or worse—part of my life. Being rich wouldn’t be bad either, but that won’t happen unless an unknown relative dies suddenly in some distant land, leaving me millions of dollars.

Where did we go off the track When did eating butter become a sin, and a little bit of extra flesh unappealing, if not repellent All religions have certain days when people refrain from eating, and excessive eating is one of Christianity’s seven deadly sins. However until quite recently, most people had a problem getting enough to eat. In some religious groups, wealth was a symbol of probable salvation and high morals, and fatness a sign of wealth and well-being.

Today the opposite is true. We have shifted to thinness as our new mark of virtue. The result is that being fat—or even only somewhat overweight—is bad because it implies a lack of moral strength.

Our obsession with thinness is also fueled by health concerns. It is true that in this country we have more overweight people than ever before, and that, in many cases, being over weight correlates with an increased risk of heart and blood vessel disease. These diseases, however, may have as much to do with our way of life and our high-fat diets as with excess weight. And the associated risk of cancer in the digestive system may be more of a dietary problem--too much fat and a lack of fiber—than a weight problem.

The real concern, then, is not that we weigh too much, but that we neither exercise enough nor eat well. Exercise is necessary for p bones and both heart and lung health. A balanced diet without a lot of fat can also help the body avoid many diseases. We should surely stop paying so much attention to weight. Simply being thin is not enough. It is actually hazardous if those who get (or already are) thin think they are automatically healthy and thus free from paying attention to their overall lifestyle. Thinness can be pure vainglory.

Swept by the prevailing trend, the author（）.

A．had to go on a diet for the greater part of her life

B．could still prevent herself from going off the track

C．had to seek help from rich distant relatives

D．had to wear highly fashionable clothes