是个好学生,她上学从不迟到。但今天上午第一节课她竟然迟到了将近30分钟。她去哪里了?原来,她是为做—件好事而迟到的。她做了什么好事呢?请你展开想象,以第一人称用一般过去时态把下面的日记补充完整。(约60词左右,已给出的开头部分不计入总词数。) June 15th, Thursday Sunny Today is Thursday. It’s a fine day. I walked to school as usual. On my way to school
【单选题】GM Organisms By far the most common genetically modified (GM) organisms are crop plants. But the technology has now been applied to almost all forms of life, from pets that glow under UV light to bact...
【单选题】如图 5 所示, 10 匝矩形线框在磁感应强度为 B =√ 2/10 T 的匀强磁场中,绕垂直磁场的轴 OO ′以角速度 ω = 100 rad/s 匀速转动,线框电阻不计,面积为 S = 0.3 m 2 ,线框通过滑环与一理想变压器的原线圈相连,副线圈接有两只灯泡 L 1 (0.3 W,30 Ω) 和 L 2 ,开关闭合时两灯泡均正常发光,且原线圈中电流表示数为 0.04 A ,则下列判断不正...