股骨颈骨折Pauwells角大于50°为外展型骨折,属于不稳定骨折。()
参考答案:错
Can you _____ to an Englishman? Yes, if he can _____ Chinese.[ ]
A. tell, speak
B. speak, say
C. talk, speak
D. tell, talk
下列条约对中国危害最严重的是[ ]
A.《南京条约》
B.《北京条约》
C.《马关条约》
D.《辛丑条约》