Some people are bad at recalling names and faces.so it's possible that they have a condition called face blindness. people suddenly have trouble recognizing family members.friends or even themselves．题目和参考答案——青夏教育精英家教网—

题目内容

5．Some people are bad at recalling names and faces，so it's possible that they have a condition called face blindness，______ people suddenly have trouble recognizing family members，friends or even themselves．（　　）

A．

for which

B．

which

C．

where

D．

of which

分析一些人不善于回忆名字和脸，这有可能是脸盲症，这种情况下人们突然在认识家人、朋友和自己有困难．

解答答案C．
分析句子结构可知，逗号之前是主句，逗号之后是非限制性定语从句，从句people suddenly have trouble recognizing family members，friends or eventhemselves句子不缺少主、宾、表等主要成分，先行词为a condition called face blindness 是表示抽象地点的名词，因此定语从句中应用故选关系副词where=in which，因此C项符合语境，故选C．

点评本题考查非限制性定语从句．解答此类题目首先要分析句子结构，非限制性定语从句中逗号是一个明显的标志，然后分析非限制性定语从句中的成分，如果缺成分用关系代词，如果不缺成分用关系副词．