将自然数从1开始依次写下去,得到1234567891011121314…则从左边数起第2010个数字是().
A.4
B.5
C.6
D.7
参考答案:C
解析:
__________he was tired, __________he didn't stop to have a rest.[ ]
A. Though; but
B. Though; /
C. But; though
D. /; /
简述台军的作战原则是什么?