一闭合线圈有50匝，总电阻为20Ω，穿过它的磁通量在0.1s内由8×10-3Wb 增加到1.2×10-2Wb，则线圈中的感应电动势E＝____V，线圈中的平均电流强度I＝____A．
在相同的水杯中分别装上了 100g的水和沙子，让太阳同时照射，并用温度计测出它们的温度，记录的数据如下表所示：
照射时间/min
0
2
4
6
8
10
温度/℃
水
26
26.7
27.5
28.1
28.6
29.0
沙子
27.8
30.5
32.1
33.6
下面是九年级学生小林近两个月的学习生活摘要 开学初，学校里组织汉字听写比赛大会，小林积极报名参加，小林所在的团队还得了奖；外出游玩，小林看到某公共场所的一个水龙头一直哗哗地流着水，他及时关掉了水龙头。课余时间，小林经常与同桌谈论中俄外交、香港占中、社会主义核心价值观等热点话题；小林平时喜欢打听老师的个人私事，并津津乐道传播某老师的小道消息；第一次单元检测，小林的英语成绩在班上很落后，小林为此灰心丧气，觉得自己很笨。 运用思想品德课所学观点，谈谈你对小林的以上这些行为的认识和评价。
The best way of learning a language is using it. The best way of learning English is talking in English as much as possible. Sometimes you'll get your words mixed up(混合) and people will not understand you. Sometimes people will say things too quickly and you can' t understand them. But if you keep your sense of humor(幽默感)，you can always have a good laugh at the mistakes you make. Don't be unhappy if people seem to be laughing at your mistakes. It's better for people to laugh at your mistakes than to be angry with you，because they don't understand what you are saying. The most important thing for learning English is："Don't be afraid of making mistakes because everyone makes mistakes."
