单选题 She claims to be very learned in biochemistry, but in fact ______ she knows about it is all sadly out of date.
A. so little B. that much C. what little D. how much

【正确答案】 C

【答案解析】题意为：她声称自己在生物化学方面很博学，但事实上她知道的相关知识很少，并且很可惜，都过时了。本句中a little用了其感叹形式what little，如果能看出正常语序时的she knows a little about it就不难答题了。