一局比赛开始前，位置表一经交给第二裁判员或记录员，除（）外，其阵容不得更改。
A.教练员申请改动
B.正常换人
C.队长申请改动
参考答案：B
People often make a mistake about my nationality. I was born of Chinese parents , _____,
I look ______ but I was born and grew up in America, so I am an American. [ ]
A. however; Chinese
B. therefore; Chinese
C. so; the Chinese
D. therefore; a Chinese
计算：200.9×200.8-200.5×201.2=______．
