It can be inferred from the passage that LinkedIn is
A.a local company in Japan who wants to follow Facebook’s suit
B.a social network adopting real—name policy
C.a data processing company analyzing social networks
D.a very successful social network in America only second to Facebook

The new form. of segregation in Paragraph 3 means that______．
A.the black and white are confined separately in the prison
B.the black is shut away from the mainstream society
C.many black people are locked in prison located in white community
D.many black people released from the prison stay in white community

设函数f（x)在（-∞，+∞)内连续，其导数图形如图所示，则在（-∞。，+∞)内
A.函数，f（x)有三个极值点，曲线y=f（x)有两个拐点．
B.函数，f（x)有四个极值点，曲线y=f（x)有一个拐点．
C.函数f（x)有三个极值点，曲线y=f（x)有一个拐点．
D.函数f（x)有四个极值点，曲线y=f（x)有两个拐点．

膜性肾小球肾炎电镜下的特征性病变是
A．系膜区低密度电子致密物沉积
B．基膜外侧驼峰样电子致密物沉积
C．上皮下电子致密物与基膜样物质形成钉突结构
D．基膜内皮侧、致密层和系膜区电子致密物沉积

Which of the following statements is Not true according to the passage？
A.California has abolished death penalty because it fmls to find proper execution means．
B.The execution of death penalties has dropped below 100 since 1999．
C.Americans are no longer die—hard fans of death penalty．
D.There is an economic consideration behind the trend of repealing death penalty．

The best title for this article perhaPs is_______．
A.The Myth of Desegregation
B.The Prison Boom in America
C.The Decline of Racial Equality
D.The Distorted News Report