Last year, another two beautiful bridges ___________ over the Jialing River.

A．built

B．are built

C．were built

D．will be built

直肠指检对下列哪些疾病有诊断或鉴别诊断意义()

A．胃癌

B．直肠癌

C．急性阑尾炎

D．肠梗阻

E．盆腔脓肿