两个正规式等价，当且仅当它们所描述的正规集相同。()

未分类题Fogg believes that the future mobile phones could notA．teach illiterates to learn alphabets.B．understand the user's ideas and points.C．help users exercise their languages.D．become more direct and elegant.

未分类题It is stated in Paragraph 4 that those who support pushing the bystander to stop the trolleyA．are brutal and relentless.B．display the same emotional aversion.C．feel guilty about doing that.D．have struggled to make the decision.

未分类题It can be inferred from the text that the reason for building a continuous span is thatA．the construction was dangerous because of severe weather.B．the engineers wanted to build the longest suspension bridge.C．building a floating tunnel or a series of bridges was impossible.D．ferry boats covered too many pointless miles and wasted time.

未分类题From the first two paragraphs, we can learn thatA．moral 'reasoning' is actually based on reason, not on emotion.B．philosophers have resolved the dilemma between reason and emotion.C．emotion plays a more important role than reason in moral judgment.D．most philosophers pursue the utilitarian goal in the trolley problem.

判断题源程序中的每个变量有两种重要的属性，一是在数据区给它们分配的存储单元地址，二是在目标程序运行时存放在相应单元中的值。()

未分类题It can be inferred from the second paragraph thatA．Google's new service is going to be a smashing success.B．people are helplessly obsessed with the Digitalized Dante.C．opinions vary towards free downloading of online books.D．people embrace the idea of making books online for free download.

判断题邻接矩阵适用于有向图和无向图的存储，但不能存储带权的有向图和无向图，而只能使用邻接表存储形式来存储它。()

未分类题PricewaterhouseCoopers and Google Games incorporate Lego workshops into their recruitments mainly toA．check whether the candidates get the required operation skills.B．test whether the candidates are innovative and funny.C．advertise themselves as well as get the most talented recruits.D．attract the candidates with their creative and easy working atmosphere.

判断题倒排文件与多重表文件的次关键字索引结构是不同的。()

未分类题It is suggested in the last paragraph that the goal of MIMA isA．to make big profits.B．to have single themes with big appeal.C．to bring profits to the whole town.D．to draw as many as 110,000 visitors a year.

判断题正规文法不能产生语言L={anbn|n≥l｝。()

未分类题According to the text, 'rational choice' holds thatA．decision making is not linked with wisdom in a sense.B．happiness relies on short-term individual gains.C．individual happiness harms the broad interests of society.D．individual fates change with reckless greed.

单项选择题对服毒的病人解毒在服毒后几小时内洗胃效果最佳( )。

未分类题According to the first two paragraphs, the 'improbable ambition'(Line 1, Paragraph 2)isA．to make Middlesbrough boom on steel and chemicals again.B．to revive the traditional industries in Middlesbrough.C．to revive Middlesbrough with glitz and glamour.D．to build an expensive gallery in Middlesbrough.

未分类题By saying 'Middlesbrough lost its heart years ago'(Line 3, Paragraph 3), Ray Mallon implies that the town has lostA．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.