There are only new words in this passage , but I know of them .
A. some ; all
B. a few ; none
C. lot of ; a few
D. little ; none
网友回答
A. some ; all
(答案→)B. a few ; none
C. lot of ; a few
D. little ; none
解析：根据new words可知，其前面不能用little，故应将D排除；而lot of的形式不存在，所以C也应该排除；根据but可知，前一句和后一句存在转折的关系，根据句意，应是none。all表示全都，而none表示全不。所以本题选B。