下面名称与玻利瓦尔无关的是 [ ] A．南美解放者杯 B．玻利维亚 C．委内瑞拉

In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33)

In his book on the (34) , Joe Simpson wrote:

(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.

The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) .

31（）

A.idea 

B.hope 

C.choice 

D.chance

装夹薄壁工件时，夹紧力的方向应选择在有利于增大夹紧力的部位。

期货交易所应当向( )报送财务会计报告。

A．期货保证金安全存管监控机构
B．国务院期货监督管理机构
C．期货公司
D．非期货公司结算会员

阅读下列材料，回答问题

【材料一】“国王仍然是国家的主人，但是已经不理国家大事了。”

【材料二】人们把他弥留之际交给华盛顿夫人的遗嘱打开之后发现，那份遗嘱是他在七月份亲自仔细拟好的，在头几条中有一条规定，要在他的妻子去世以后解放他家中的奴隶。

——《华盛顿传》

【材料三】1911年在中国建立起美国政体的仿制品，真是荒唐可笑。……这种政体悲惨的结束了，即悲惨的失败了。然而，失败的并不是这种政体，而是一代人。

——N.佩弗《远东》

请回答：

根据材料二，华盛顿作为总统，为什么不能解放全国的奴隶？那时该国的政体形式如何？该形式是何时哪一个重要文献加以确立的？该文献体现了哪些宪政原则？