具有“设备独立性”的计算机系统中，下列说法正确的是（）
My wallet is nowhere to be found.I_____it when I was on the bus.
Copernicus maintained that the earth_____round the sun.
原发性痛经的疼痛部位通常不包括（）
过敏性紫癜最具特征性的临床表现是（）
妇科检查中下列哪项不正确（）
Not all birds can fly , ______ do all birds build nests.
The proposal deserves support as it gives ______ to the needs of children.
婴儿停用洋地黄药物的指征是（）
On arriving home, the boy told his parents about all the ______ which occurred in his dormitory.
胎盘的组成包括（）