University academics are concerned because _______.
A. young people are showing less interest in higher education
B. students cannot understand modem academic texts
C. academic books are too childish for their undergraduates
D. there has been a significant change in student literacy
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The youngest readers will quickly develop good reading skills if they _______.
A. learn to associate the words in a text with pictures
B. are exposed to modem teaching techniques
C. are encouraged to ignore pictures in the text
D. learn the art of telling stories
The cost for people in the Pads region on weddings last year was probably _______.
A. 50,000 francs
B. 57,000 francs
C. 60,000 francs
D. 63,000 francs
Which one is in the central Italy
A. Volscians.
B. Samnites.
C. Umbrians.
D. Bruttians.
在关系模型中，一个关键字
A. 可由多个任意属性组成
B. 至多由一个属性组成
C. 可由一个或多个其值能唯一标识该关系模式或任何元组的属性组成
D. 以上都不是
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