In April,2009，President Hu inspected the warships in Qingdao，________ the 60th anniversary of the founding of the PLA Navy.

A．marking

B．marked

C．having marked

D．being marked

关于泪腺多形性腺瘤的影像学表现，不正确的是（）。

A.泪腺窝肿物

B.B超示中高回声、边界不清的肿块

C.B超示肿块加压不变形

D.CT示泪腺窝扩大

E.CT示肿块呈结节状，可有钙化