以下哪项与补体结合试验无关（） A.抗原 B.抗体 C.补体 D.溶血素

Our Party has always devoted great attention to raising the living________of the working people.[ ]

A．cost  

B．situation

C．level  

D．standard

斜方肌上、下部肌纤维和前锯肌下部肌纤维可以使肩胛骨（）
斜方肌上部和胸锁乳突肌可以使肩胛骨（）
斜方肌和前锯肌下部肌纤维可以使肩胛骨（）
斜方肌和菱形肌可以使肩胛骨（）
胸大肌和胸小肌可以使肩胛骨（）

A.上提

B.下降

C.前伸

D.后缩

E.上回旋

如图所示是用于气体制备、干燥、性质验证、尾气处理的部分仪器装置（加热及夹持固定装置均已略去，各装置可重复使用）．请根据下列要求回答问题．

（1）若锥形瓶中盛装漂白粉固体，分液漏斗中盛装浓盐酸，则：

当仪器连接顺序为A→C→C→B→D时，B装置中为铝粉，制备少量无水三氯化铝．A中发生反应的化学方程式______，第二个C装置中盛装的试剂为______，D装置的作用是______．

（2）若锥形瓶中盛装足量的Na₂O₂粉末，分液漏斗中盛装浓氨水，慢慢打开分液漏斗的活塞，则产生的气体通过红热的铂粉，各仪器装置按气流方向从左到右连接顺序是（填字母）______→______→______→______；装置B中可能观察到的现象是______．

（3）若锥形瓶中为大理石，分液漏斗中为稀盐酸，B装置中为镁粉，为验证镁与二氧化碳的反应，仪器的连接顺序为A→C→C→B，第一个装置中的试剂名称为______，B中发生反应的化学方程式为______，在加热B装置之前，应该______．

（4）若锥形瓶中为二氧化锰固体，分液漏斗中为双氧水，B装置中为电石（只含杂质硫化钙），仪器的连接顺序为A→C→B→C→C，第二个C装置中为品红溶液，第三个C装置中为澄清石灰水，且实验后品红溶液红色明显变浅，澄清石灰水变浑浊，写出B中发生的可能反应______，______．若反应前B中样品质量为8.40g，反应后B中残留固体质量为7.28g，则电石中碳化钙的质量分数为______．（假设固体反应完全，结果保留三位有效数字）．

患者，女，28岁。被人发现时已昏睡在公园一角。查体：神志不清，两侧瞳孔针尖大小，呼吸有大蒜臭味。应首先考虑的是

A．急性安眠药中毒

B．苯酚中毒

C．急性有机磷农药中毒

D．急性毒草中毒

E．亚硝酸盐中毒

Come on, my fellow white folks, we have something to confess. Out with it, friends, the biggest secret known to whites since the invention of powdered rouge: welfare is a white program. The numbers go like this: 61% of the population receiving welfare, listed as "means-tested cash assistance" by the Census Bureau, is identified as white, while only 33% is identified as black. These numbers notwithstanding, the Republican version of "political correctness" has given us "welfare cheat" as a new term for African American since the early days of Ronald Reagan.

Our confession surely stands: white folks have been gobbling up the welfare budget while blaming someone else. But it’s worse than that. If we look at Social Security, which is another form of welfare, although it is often mistaken for an individual insurance program, then whites are the ones who are crowding the trough. We receive almost twice as much per capita, for an aggregate advantage to our race of $10 billion a year--much more than the $3. 9 billion advantage African American gain from their disproportionate share of welfare. One sad reason: whites live an average of six years longer than African Americans, meaning that young black workers help subsidize a huge and growing "over-class" of white retirees. I do not see our confession bringing much relief. There’s a reason for resentment, though it has more to do with class than with race. White people are poor too, and in numbers far exceeding any of our more generously pigmented social groups. And poverty as defined by the government is a vast underestimation of the economic terror that persists at incomes--such as $ 20,000 or even $ 40,000 and above--that we like to think of as middle class.

The problem is not that welfare is too generous to blacks but that social welfare in general is too stingy to all concerned. Naturally, whites in the swelling "near poor" category resent the notion of whole races supposedly frolicking at their expense. Whites, near poor and middle class, need help too--as do the many African Americans.

So we white folks have a choice. We can keep pretending that welfare is black program and a scheme for transferring our earnings to the pockets of shiftless, dark-skinned people. Or we can clear our throats, blush prettily and admit that we are hurting too--for cash assistance when we’re down and out, for health insurance, for college aid and all the rest. Racial scapegoating has its charms, I will admit: the surge of righteous anger, even the fun--for those inclined--of wearing sheets and burning crosses. But there are better, nobler sources of white pride, it seems to me. Remember this: only we can truly, deeply blush.

The author is most critical of the whites’（）

A. confession

B. hypocrisy

C.arrogance

D. hysteria