My uncle's house in the downtown area is much smaller than ours,but it is twice_________ expensive.    [ ]

A.as          

B.so          

C.too          

D. very

下列哪种是人工流产后远期并发症（）。

A.宫颈黏连

B.宫腔黏连

C.空气栓塞

D.人工流产综合反应

E.子宫穿孔