[单项选择]19世纪80年代初，德国的人口调查中，还没有“电力工业工人”一栏。可是，1895年，电力工业工人就有25000人，到1906-1907年，则达107000人。这主要说明（）。
A. 德国人口调查渐趋细化和准确
B. 德国就业率不断提高
C. 电力工业是德国日益重要的新兴产业
D. 世界各国进入了“电气时代”

[单项选择]19世纪80年代初，德国的人口调查中，还没有"电力工业工人"一栏。可是，1895年，电力工业工人就有25000人，到1906-1907年，则达107000人。这主要说明（）。
A. 德国人口调查渐趋细化和准确
B. 德国就业率不断提高
C. 电力工业是德国日益重要的新兴产业
D. 世界各国进入了"电气时代"

[单项选择] A Census Bureau (人口调查局) survey released Thursday shows a college graduate can expect to earn $ 2. 1 million working full-time between 25 and 64, which demographers (人口学家) call a typical work-life period. A master’’ s degree-holder is projected to earn 2.5 million, while someone with a professional degree, such as a doctor or lawyer, could make even more--$ 4.4 million. In contrast, a high school graduate can expect to make $ 1.2 million during the working years, according to the bureau report that tracked the influence of education on lifetime earnings. Not all students look at college as an investment, "but I am sure parents do," said Jacque line King, policy analyst with the American Education Council, a higher education advocacy (拥护) group. "The college is to convince those high school students on the margins that it is really worth their time to go to college." Kevin Malecek, a graduate student in American politics at American University in Washington said most of his class
A. students Who actually regard higher education as an investment
B. students who can’’t afford the money to go to college or university
C. students who can’’t go to college because they have failed in the college entrance examination
D. students who don’’ t know whether higher education can have great influence on their earnings

[单项选择]计算机自20世纪70年代初问世以来，经历了( )个发展年代。
A. 3
B. 4
C. 5
D. 6

[判断题]人口调查资料包括居民的年龄、性别、职业等。( )

[单项选择]历史上，政府对电力工业实行( )管理。
A. 垂直一体化
B. 统一领导、分散管理
C. 交叉
D. 地方管理