主要特点是长期尿路感染引起的结石为（）
A．碳酸钙结石
B．尿酸结石
C．黄嘌呤结石
D．磷酸盐结石
E．氨酸结石
参考答案：D
大量气胸X线胸片可见（）
A.患侧膈下降
B.患侧胸廓明显塌陷
C.纵隔健侧移位
D.肺完全压缩
E.肋间隙增宽
A new planet has been discovered recently. It’s ______ Earth，and hopefully it can support human life.
A．almost three times the size of
B．three times the size than
C．three times almost as large as
D．almost three times as larger as
