单选题 Smoking makes one six times more likely to get oral cancer partly because the smoke constantly assaults the tissues that line the mouth and throat.

A、 detects
B、 contaminates
C、 occupies
D、 attacks

【正确答案】 D

【答案解析】[解析] 题干：吸烟使得患口腔癌的几率增高六倍，部分原因是吸入的烟会持续伤害口腔和咽喉表层的薄膜。assault攻击，袭击；attack攻击；detect察觉，发觉；contaminate污染；occupy占据，占用。根据题意，D为正确选项。