It was very cold outside and we had       to go, so we had to stay at home .

A．somewhere

B．nowhere

C．anywhere

D．everywhere

下述肺肿块鉴别要点，哪项不对（）

A.良性肿块的边缘常较光整

B.毛刺征对肿块良恶性鉴别价值不大

C.恶性肿瘤钙化率较低

D.4cm以上肿块则以恶性的可能性较大

E.空泡征多提示为肺癌