A:西藏自治区
B:内蒙古自治区
C:新疆维吾尔自治区
D:台湾省
请以“那个为我提灯的人”为题,写一篇不少于600字的文章。
要求:①内容具体,有真情实感;②除诗歌外,文体不限;③不得出现真实的人名、校名;
B.滑动变阻器:最大阻值如图甲
C.滑动变阻器:最大阻值如图乙
D.定值电阻R0:阻值20Ω
E.电压表V:测量范围0~3V
F.电源E:电源电压恒为4.5V
G.单刀双掷开关(双向开关)S及导线若干
为了较精确地测出待测电阻Rx的电阻,小明设计了图丙所示的电路。
【进行猜想】猜想Ⅰ:该溶液的溶质是NaCl;
猜想Ⅱ:该溶液的溶质是NaOH;
猜想Ⅲ:该溶液的溶质是Na2CO3;
猜想IV:该溶液的溶质是NaHCO3.
Now boys and girls, I have got something to t____ you. Tomorrow is Friday. We are going to have our O____ Day. Our parents will come to school and v____ our school. They will a____ at three t____. They will s____ in the classroom and listen to our teachers. Then they will go to the p____ to see our wonderful show.