牙源性角化囊肿易复发的原因不包括
A.囊壁薄
B.可能存在多发病灶
C.同一病灶内有多个囊腔
D.可能存在子囊
E.囊肿内有角化物
参考答案:E
We met an old friend in New York ________our expectation. She waved at us ________ the street
when she saw us. [ ]
A. with; in
B. out of; next to
C. in; out of
D. beyond; from across
增值税一般纳税人之间,只要发生销售货物和应税劳务的,就应当向购买方开具专用发票。()