耳部CT扫描的适应证
不包括
A．先天性耳道畸形 B．肿瘤C．炎症 D．药物性失聪E．外伤
参考答案：D
Some of the students are not sure ___ spelling the word, while others are not sure ___ the use of some grammatical rules.
A．of… about
B．about…to
C．of…to
D．for….of
毒蕈中毒中以脏器损害型中毒最为严重，死亡率高。
