Country life provides him with peace and quietness, ______ what he can’t enjoy living in cities.

A．that is

B．which is

C．what

D．is for which

稽留流产的特点有

A．指胚胎或胎儿已死亡滞留宫腔

B．子宫小于停经周数

C．妇科检查宫口开大

D．可能发生DIC

E．行刮宫术要一次刮净