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.

51().

A.made 

B.constituted 

C.consisted 

D.composed

中子星是恒星演化过程中的一种结果，它的密度很大．现有一颗中子星，观测到它的自转周期为问该中子星的最小密度应是多少才能维持该星体的稳定，不致因自转而瓦解？（计算时星体可被视为均匀球体，引力常量G=6. 67×10^-11N·m²/kg²）