材护理剂应进行石材（）防护处理.
A.二面体
B.六面体
C.四面体
D.正背面
参考答案：B
张某，男，30岁，电工，三度烧伤，烧伤总面积70%．对该病人应采用（）
A.严密隔离
B.消化道隔离
C.呼吸道隔离
D.保护性隔离
E.接触隔离
Jake always makes us laugh, he is much ______ than his brother. [ ]
A. fun
B. funny
C. funnier
D. funniest
