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【单选题】
Imagine, if you will, the average games player. What do you see? A guy who never grew up? Or a nervous 18-year-old pushing buttons on his controller, lost and alone in a violent onscreen world? Sorry, you lose. The average gamer is starting to look pretty much like the average person. For the first time, according to a US poll commissioned by AOL Games, roughly half of those surveyed, ages 12 to 55, are tapping away at some kind of electronic game—whether on a PC, a cell phone or another handheld device—for an average of three hours every week. The games people play say a lot about who they are. Machines like the Xbox and PlayStation 2 are largely the territory of twenty-something men, who prefer to picture themselves as sports ‘stars and racing drivers. Men 50 and older prefer military games. Teenage girls are much more likely than boys to play games on their phone, while older women make up the majority of people playing card games such as Hearts on line. Is it a good thing, all this time spent on games? Or is it as harmful as television, pulling people ever further from reality? The AOL survey suggests some players are in denial about the extent of their habit. One in 10 gamers find it impossible to resist games 1 in 4 admits to losing a night’s sleep to play games and another quarter has been too absorbed to have meals. But don’t think we’re all heading into a world with everyone plugged into, if not totally controlled by, his own game. Quite the contrary: gamers appear to be more engaged with reality than other kinds of couch potatoes. According to a comprehensive survey by the Entertainment Software Association (ESA-whose members, of course, want you to think video games are healthy), gamers spend an average of 23 hours a week volunteering and going to church, concerts, museums and other cultural events. More enthusiastic gamers who play 11 hours a week or more spend ever more time out in the cultural world (34 hours). The AOL survey finds that electronic games ______.
A.
do not present a violent onscreen world
B.
no longer keep gamers from growing up
C.
are no longer exclusive to young people
D.
are not as popular with teenagers as before
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【单选题】磷酸戊糖途径主要是:
A.
生成磷酸戊糖和NADPH供合成代谢的需要
B.
葡萄糖氧化供能的途径
C.
饥饿时增强
D.
体内CO2生成的主要来源
E.
生成的NADPH可直接进入电子传递链
【多选题】下列节日属于中国传统民间节日的是()。
A.
圣诞节
B.
重阳节
C.
清明节
D.
元宵节
E.
情人节
【单选题】磷酸戊糖途径主要是:
A.
生成NADPH供合成代谢需要
B.
葡萄糖氧化供能的途径
C.
饥饿时此途径增强
D.
体内CO2生成的主要来源
【单选题】在下列节日中,属于民间的节日是( )。
A.
女儿节
B.
文化节
C.
敬老节
D.
勤劳感谢节
【单选题】磷酸戊糖途径主要是:
A.
生成NADPH供合成代谢需要
B.
葡萄糖氧化供能的途径
C.
饥饿时此途径增强
D.
体内 CO 2 生成的主要来源
E.
生成的NADPH可直接进电子传递链生成ATP
【判断题】器具的选择主要取决于被测工件的精度要求,在保证精度的前提下,也要考虑尺寸大小,结构形状,材料与被测表面的位置,同时也要考虑工件的批量,生产方式和生产成本等因素,对于批量大的工件,多用专用计量器具,对于单件小批量则多用 通用 计量器具。
A.
正确
B.
错误
【单选题】青霉素的作用机制是抑制( )
A.
二氢叶酸还原酶
B.
环氧化酶
C.
黏肽转肽酶
D.
DNA螺旋酶
【单选题】磷酸戊糖途径主要是
A.
生成NADPH供合成代谢的需要
B.
葡萄糖氧化供能的途径
C.
饥饿时增强
D.
体内CO2
E.
生成的NADPH可直接进入电子传递
【判断题】一般说来,测量器具的选择主要取决于被测工件的精度要求
A.
正确
B.
错误
【判断题】青霉素的作用机制是抑制二氢叶酸合成酶。()
A.
正确
B.
错误
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