Hello! I'm Wang Lin. I like sports very much. Basketball is 1 favourite sport. Tom is my friend. He is an 2  boy. He is from America. He is 12 3  old. He likes sports, too. He has（有）a big ball collection（收藏物） 4  his room. There are 5  balls in the room. Tom's  6  aren't at home.  7  his sister Dee is at home. She is in the room now. Her favourite 8  is football. I don't like  9  because（因为）she isn't nice to me. I want（想要）to have a 10 collection too. Then I can have many balls. Do you want to have one?

一定条件下石墨可转化成金刚石，关于此过程说法不正确的是（　　）

进入青春期以后，同学们对于男女同学之间的关系看的很是微妙，如果有男同学和女同学走的近，就会有人在背后指手画脚，对这种情况，你的认为是（    ）

测量一干电池组的电动势和内电阻所用器材如下，连线图如图甲所示：

A．电流表A：量程0～100mA、内阻为16.0Ω；

B．电压表V：量程0～3V、内阻约为30KΩ；

C．干电池组E：电动势待测、内阻待测；

D．滑动变阻器R：0～10Ω；

E．定值电阻R₀：电阻值为4.0Ω；

F．单刀单掷开关S，导线若干．

实验时测量出电流表A的示数I和电压表V的示数U，对应的数据画出如图乙所示的U﹣I图象，利用图象可求出该千电池组的电动势为E=____V，内电阻为r=____Ω

小电珠L的额定电压为3.8V，现已测出其伏安特性曲线如图丙所示，它的额定电功率P_额=____W．

将L接在上面所测干电池组的两极上并接通电路，则L消耗的实际电功率P=____W．