易合并脓胸、脓气胸的肺炎是
A.金黄色葡萄球菌肺炎B.腺病毒肺炎C.毛细支气管炎D.支原体肺炎E.支气管肺炎
参考答案:A
.——is a good chance that he is willing to allow U8 to join in the ball game.
A.There
B.It
C.That
D.This
将边长为a的正方形ABCD沿对角线AC折成60°的二面角后,B,D两点之间的距离等于 .