Gianmarco Ottaviano and Giovanni Peri point out that immigration
A．is immune from negative effects.
B．has lead to economic prosperity and social stability.
C．has enhanced wages of most American workers.
D．will root out illegal documentation of workers.

判断题三十六字母大约反映了先秦时期的声母系统。()

未分类题The plan of creating a new class of 'guest workers'A．has aroused criticism from conservatives, liberals and the business world.B．has allowed immigrants to work in the U.S. for six consecutive years.C．will benefit both businesses and immigrant labor employers.D．will give people a good reason to threat such workers as slaves.

未分类题What is the authors attitude towards guest workers plan?

未分类题Dr Maddux and Dr Galinsky adopted statistical controls toA．filter out the interference factors such as personality traits.B．identify the statistical relationship between personality and creativity.C．analyze the interaction between personality and creativity.D．measure the influence of openness to new experiences on creativity.

未分类题It can be inferred from Paragraph 4 that in Africa and AsiaA．the private sector is the last straw for health services.B．the physical condition of workforce is rather weak.C．some miners might have been infected with AIDS.D．HSBC attracts customers with innovative health schemes.

判断题教育会诊法的适用范围比较广泛。不仅可以适用于发展方面存在问题的学生，而且可以适用于正常的学生。()

未分类题We can learn from the last paragraph that the author believesA．training converts clinics into far-reaching health systems.B．private-sector and voluntary efforts can replace official programs.C．health-care workers treat patients much better.D．training programs well deserve prompt financial support

判断题样本是否具有代表性是非常重要的一个问题，只有样本有较高代表性，那么由样本特征推断的总体特征才有普遍意义，对总体的研究结果才有推广价值。()

判断题一般教育中的案例其研究对象是人，而人由于其生存的环境和所受的教育不同，其生理特点、个性心理、文化修养等方面均存在着显著的差异，所以个案的借鉴和推广有很大的局限性。()

未分类题The cell phone may be eavesdropping in thatA．the software industry has created a do-it-yourself program.B．the spy phone software requires no special skills or knowledge.C．a recent software can transfer a wiretapping program to other phones.D．to download the spy phone software is as easy as pressing keys.

未分类题Why was Dizzy Gillespie regarded as a 'secret sonic weapon' in 1956?A．He was deployed to help the U.S. gain the victory of the cold war.B．He was assigned to beat enemies at the peak of the cold war.C．He had the power to influence the world during the cold war.D．He could help to reshape a new image of American culture to the world.

判断题所谓人治，就是国家以一套严格的道德制度去规范和约束人们的行为，从而产生社会秩序。要使道德高度变为德治，必须以权利的不平等和权力的不制衡为前提。()

未分类题The sentence 'Most remarkable of all has been the rebound among young men.'(Line 1, Paragraph 4)denotes that young men haveA．started to outperform. young women in academic studies.B．enjoyed reading more comprehensively than young women.C．narrowed the gap with young women in learning.D．showed a sign of willingness to read more than before.

判断题综合消息报道面广，声势浩大，点面结合，综览全局，概括性强，能给读者一个较完整的印象。()

未分类题What does the author mean by 'dumbing down'(Line 3, Paragraph 1)?A．Becoming illiterate.B．Becoming noiseless.C．Getting clumsy.D．Getting inflexible.