We can learn from the first paragraph that
A．the Snowden incident was a heavy blow to Booz Allen Hamilton.
B．private firms and government spies have long worked together.
C．cooperation between the private and public sectors should be stopped.
D．many failed to note the role of private firms in the intelligence arena.

单项选择题()的原理是生物从无到有、从简单到复杂、从低级到高级的演化是不可逆转的，故不同地质时代的地层含有不同的化石及其组合，而相同时代相同环境下形成的地层则含有相同的化石。

未分类题Some are worried about the cyber-industrial complex in thatA．it is a duplicate of the military-industrial complex.B．the possible intimate link will pose potential risks.C．private and public sectors will conspire to monitor them.D．they will be deprived of the right to the freedom of speech.

未分类题One reason why the cyber-industrial complex should be welcomed is thatA．it can create more job opportunities in America.B．it can enhance industrialization of IT researches.C．it is a good way to combat online security threats.D．it can prevent scandals like the Snowden incident.

单项选择题根据我国黄土地区的工程实践经验，以湿陷系数是否大于或等于()作为判定黄土湿陷性的界限值。A.0.01 B.0.012C.0.015

未分类题Longo would most likely agree thatA．healthy people have precise sense of hand proportions.B．some people have imprecise sense of body proportions.C．distorted senses of hand are dominant among all people.D．people only have inaccurate sense of hand proportions.