The difference between modern cell phones and old phones lies in that
A．it requires more intelligence and education to use modem cell phones.
B．it takes more weeks to get familiar with modem cell phones.
C．modem cell phones are more complicated with many functions.
D．modem cell phones are more mysterious tools for people.

未分类题The researches held by Motorola showed that the textually illiterate villagersA．were willing to use old machines with little functions.B．had to take some lessons to learn the new functions.C．could remember the major function of each button.D．would avoid reading the hierarchy menus of the machine.

判断题两个正规式等价，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.