问题
选择题
根据表格内有关数据信息，小明作出下列四种判断，其中正确的是（ ）
A．-260℃时，氢是液体 B．电灯泡的灯丝是钨制成的，因为钨熔点高 C．纯金掉在钢水里不会熔化 D．南极最低温度为-89.2℃，可在该地使用水银温度计 |
答案
答案：B
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根据表格内有关数据信息，小明作出下列四种判断，其中正确的是（ ）
A．-260℃时，氢是液体 B．电灯泡的灯丝是钨制成的，因为钨熔点高 C．纯金掉在钢水里不会熔化 D．南极最低温度为-89.2℃，可在该地使用水银温度计 |
答案：B
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| A new term has begun. Teachers are 1 about the fact that new students are not easy to handle. They like to bring cellphones and MP3 players to school. What is 2 , some students even use cellphones to do with out-of-class matters in class, or sometimes just for fun. Some other students listen to MP3 players when they are having a lesson that they are not interested in. Are these new students really that 3 ? "Yes," says Delaney Kirk, a professor at Drake University. 4 she adds it's not their fault. Instead, the things that they bring into school-cellphones, MP3 players and so on-and the teachers are to blame. Kirk first began thinking about students' manners six years ago. "I had my first class in which students were sleeping or talking to each other. It seemed that learning well 5 nothing to do with them," she says. "At first, I got worried about this, but then I said to myself, 'You're teaching 6 , and you need to manage this … These students need to know more about manners. It's time to help them develop some good 7 . They shouldn't waste time doing nothing when they are young. Sooner or later, they might regret the time they have wasted.'" Kirk also 8 a list of suggestions to help teachers better manage their classes. The following are among her suggestions: ● Tell students how they will benefit by taking the class. On the first day of class, emphasize its importance 9 giving some homework that students must turn in next time. ● Do not allow them to bring cellphones and MP3 players to the class at all. ● Decide 10 formal and informal the class will be. | ||||
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