By saying 'Middlesbrough lost its heart years ago'(Line 3, Paragraph 3), Ray Mallon implies that the town has lost
A．its confidence a long time ago.
B．its attraction a long time ago.
C．an important organ long ago.
D．its way a long time ago.

判断题有穷自动机能够识别上下文无关语言。()

未分类题Money from outside the town is quite needed becauseA．few people will pay a visit to Middlesbrough Institute of Modern Art.B．the local unemployment rate is high and business registration rate is low.C．many people will choose to go to Newcastle to experience culture.D．the town suffers the high unemployment rate—twice the national average.

判断题样本均值分布式一个特殊的总体分布。()

未分类题It can be inferred from the first paragraph thatA．the 1957 influenza infected 250,000 people in AmericaB．Asia was the cradle of the 1957 influenza pandemic in America.C．Maurice Hilleman went to Asia to Collect the sample of the influenzaD．it was quite time-consuming to study the genetic structure of the influenza

判断题原始分数和Z分数之间的转换过程实际上就是对分布轴的一种重新标定。()