Do you write a report _____ wild animals

不等式8x²-2x-3＞0的解集为______．

选词填空。 get, go, be, swim, learn, game, different, good, stop, leave 1. Jim ____ his math homework at home yesterday. 2. ____ is my hobby. 3. Excuse me, have you ____ any books about biology? 4. What are the ____ between American English and British English? 5. Where's Jim? He has ____ to plant trees with his classmates. 6. Tom thinks that the movie Hero is much ____ than Crouching Tiger, Hidden Dragon (卧虎藏龙). 7. The students ____ talking when the teacher came in. 8. The Olympic ____ of 2012 will be held in London. 9. I've ____ in this city for about 30 years. 10. There are a lot of people ____ English in China now.

小明的妈妈购买了一台家用豆浆机，其部分技术参数如表：

额定电压	220V	电机额定功率	200W
额定频率	50Hz	加热器额定功率	750W

小明对制作豆浆的过程进行了观察：把豆料、清水放入豆浆机中，经过预热、打浆、煮浆等程序，即可制成熟豆浆，并且加热和打浆是交替进行的，请根据以上信息解答下列问题（计算结果保留一位小数）：

（1）为防止豆浆机在打浆时位置发生移动，在机座底部安装有三个小橡皮碗，相当于“吸盘”，吸盘是利用______起固定作用的．

（2）豆浆机中的电动机和电热丝的连接方式是______．

（3）豆浆机在额定电压下打浆时，通过电动机的电流是多少？

（4）在用电高峰期，若电压只有210V，那么豆浆机的实际加热功率为多少？（设电热丝的电阻不随温度变化）

C++程序中的预处理命令以符号 【6】 作为起始标记。

内在动机