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【解析】 A 考查定语从句中“介词十关系词”的用法。句意为：关闭电视周，每年世界
各地数百万的人都在做，旨在鼓励人们注重生活。从句中谓语动词participate是不及物动词，常与介词in连用表示“参与”的意思，相当于take part in，选A。
6． [2010·江苏卷] The newly-built cafe，the walls of ________ are painted light green，is really a peaceful place for us，especially after hard work.
A．that B．it C．what D．which
【解析】 D 本题考查定语从句。先行词为cafe，此处the walls of which可以变化
成“whose walls”，在从句中作主语。
7． Nowadays, when people talk about magicians, the first one ________comes into their mind is Liu Qian.
A．where B．which C．that D．what
【解析】 C 定语从句先行词为the first one。定语从句中当先行词为序数词或是被
序数词修饰时用that引导定语从句。
8． [2009·四川卷] She'll never forget her stay there ________ she found her son who had gone missing two years before.
A．that B．which C．where D．when
【解析】 D 考查定语从句的用法。her stay为先行词，可以理解为抽象的一段时间(她
呆在那里期间)，when指代her stay，在定语从句中作时间状语。
9． [2009·全国卷Ⅱ] My friend showed me round the town，________was very kind of him.
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10．[2009·江苏卷] ________is known to us is that the old doctor, for________ life was hard in the past, still works very hard in his late life.
A．As; whom C．It; whose
B．What; whom D．As; whose
A．which B．that C．where D．it
【解析】 A 考查非限制性定语从句，这里的which指代前面整句话内容。
【解析】 B 考查主语从句及定语从句。第一空是由what引导的主语从句，what is
known to us is that…也是固定结构；第二空学生很容易会错选whose，后半句还原为：life was hard for him，所以用介词＋whom。
11．Sun Valley raised and processed about a million chickens, ________up to half went to McDonald's.
A．in which B．for which C．with which D．of which
【解析】 D 在定语从句中，of which up to half ＝ up to half of which ＝ up to
half of the chickens。
12．Take an active part in the activities you enjoy ________you can make many friends.
A．where B．when C．that D．what
【解析】 A 考查定语从句关系词的选择。先行词为the activities，在从句中作抽象
的地点状语，所以要用where。
13．[2010·北京卷] Children who are not active or________ diet is high in fat will gain
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weight quickly.
A．what B．whose C．which D．that
【解析】 B 本题考查定语从句引导词。先行词children和diet之间是所属关系，用
whose 来引导定语从句。
14．[2010·四川卷] After graduating from college，I took some time off to go traveling，________ turned out to be a wise decision.
15．We recommend that our human beings treat the nature with the same care ________we give to our eyes.
A．that B．which C．as D．what
【解析】 C 考查定语从句引导词的用法。若先行词有the same修饰，其后定语从句A．that B．which C．when D．where
【解析】 B 考查定语从句。这里which引导非限制性定语从句，代替整个主句。
则用that或as引导。that表示同一个，as表示同类中的一个但不是同一个。根据题意可知应用as。
16．[2010·浙江卷] The settlement is home to nearly 1,000 people，many of ________ left their village homes for a better life in the city.
A．whom B．which C．them D．those
【解析】 A 本题考查定语从句。many 从属于nearly 1,000 people，故用of＋whom
引导非限制性定语从句，在从句中作主语。
17．The film started to get boring, at ________ point I left the cinema accompanied
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by my twin sister.
A．this B．that C．the D．which
【解析】 D 本题考查非限制性定语从句。which引导非限制性定语从句，并在从句
中作定语。
18．After graduation I'd like to find a job ________I can use what I have learnt at school.
A．whose B．which C．where D．that
【解析】 C 本题考查定语从句。根据语境可知，毕业后想找一份学有所用的工作。
由于定语从句中成分齐全，故C项正确，where在句中作地点状语。
19．I admire my English teacher. I can remember very few occasions ________ she stopped working because of her illness.
A．that B．when C．who D．which
【解析】 B 本题考查定语从句。本句中定语从句的先行词是occasions，“场合”的意
思。句意为：我尊敬我的英语老师。我记得没有什么时候她会因为生病而停止工作。选B。
20．Though it is 30 years ________ we last met, I still remember the scene ________ we got separated on a rainy day.
A．before; where B．before; which C．since; when
D．since; where
【解析】 D 考查时间状语从句和定语从句。“it is/has been＋一段时间＋since从句”
为固定句型，表示自从上次干某事到现在有多长时间了；scene作先行词且定语从句中需要的是地点状语，故用where或in which引导定语从句。