I don't know when _____ famous?[ ]
A. does he become
B. he becomes
C. did he become
答案:B
从一幅扑克牌(52张)中任取4张,4张牌的花色相同的概率为().
A.0.0106
B.0.0176
C.0.1760
D.0.2026
肺癌()。
A.X线胸片见单个薄壁空洞
B.X线胸片呈大片状阴影,内为单个空洞伴液平
C.X线胸片有偏心空洞,内壁凸凹不平
D.X线胸片上肺有小片状阴影伴空洞
E.X线胸片呈大片状阴影,呈肺叶或肺段分布