这道题中的 activity 做地点状语。选d
4.【解析】选d：本题考查对定语从句的掌握和运用能力。句意为“那些失聪的成功舞蹈演员们认为，舞蹈是一种让人看胜过让人听的活动。”据句子结构判断，空白处缺一引导定语从句的关联词，由于先行词activity在从句中担任地点状语故应该选择关系副词where，因此正确答案为d项。
所以大部分的语法解析中提到当situation stage case point这四个词在定语从句中作先行词表示抽象的地点时,其后的定语从句的引导词一般用where 例如：
1. the media can draw attention to situation where help is needed. 2. we have reached a stage where we have almost no rights.
3. today, we’ll discuss a number of cases where beginners of english fail to use the language properly.
4. we are just trying to reach a point where both sides will sit down together and talk.
5. their youngest child is at the stage where she can say individual words but not full sentences.
练习：用适当的关系副词填空
1. today, we’ll discuss a number of cases________ beginners of english fail to use the language properly.
a．which b．as c．why d．where
2. those successful deaf dancers think that dancing is an activity_______ sight matters more than hearing.
a．when b．whose c．which d．where
3. after graduation she reached a point in her career_______ she needed to decide what to do.
a．that b．what c．which d．where 4. can you think out a situation _______ this word can be used? a．where b．whose c．which d．when
5. her illness has developed to the point _______ nobody can cure her. a．that b．where c．which d．what
6. we're just trying to reaching a point _________ both sides will sit down together and talk.
a. when b. that c. where d. which
答案及解释：
1. 答案d。解析：考查定语从句。先行词是cases，意思是：情况，状态，关系词在从句中作状语，先行词指地点，