【C3】A．assumeB．discoverC．viewD．confirm

【C19】A．examineB．discoverC．findD．investigate

【C10】A．useB．placeC．viewD．absence

The music would stop at intervals, then ________ after a while.A assumeB presumeC cons

I didnt ______ to take a taxi but I had to as 1 was late.A．assumeB．supposeC．meanD．hope

根据SQL标准，删除一个表，应该使用下面哪个语句？（)A DELETE TABLEB DROP TABLEC DELETE VIEWD

根据SQL标准，删除索引应该选用下面哪个语句？（)A DELETE INDEXB DROP INDEXC DELETE VIEWD DRO