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问题 选择题

入射光线和平面镜间的夹角为35°，转动平面镜，使入射角增大5°，则入射光线与反射光线的夹角为：[ ]

A. 70° 　　　　

B. 110°

C. 80° 　　　

D. 120°

答案

答案：D

单项选择题

Society can be broken up into three classes: the Elite, the Meek and the Masses. The Elite are (51) of the top 10% of society, those that don’t need anyone’s help (52) it comes to getting what they want. They have the status, the money, the power, and the respect to (53) whatever they need. In spite of the fact that they enjoy the upper hand, people outside of this class will still go to great (54) to help them even further.

The Meek are comprised of the bottom 10% of society, those who need our help, and badly at that. But (55) so many of us are eager to get in well with the Elite, few actually care enough to provide any (56) to the Meek. The Masses are the largest class, (57) up the middle 80% between the Meek and the Elite. Most of the Masses could use some help getting by, and (58) it would usually improve their lives considerably, but they (59) get it. Why do most people would rather help the Meek or the Elite Because they are (60) with instant gratification or the anticipation of future benefits. We rarely help the Masses because there is nothing really in it for us, and this shows humanity’s true colors.

58().

A.acquiring 

B.acquire 

C.toacquire 

D.acquired
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多项选择题

下列选项中，关于股票期货的说法，正确的有（）。

A.股票期货是以单只股票或窄基股票指数作为标的物的期货合约

B.目前全球绝大多数股票期货都是窄基股票期货

C.股票期货出现于20世纪80年代后期

D.2001年1月29日，美国oneChiCago交易所首次推出以英国、欧洲大陆和美国的蓝筹股为标的物的股票期货交易
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