A [考查定语从句。句意：真有趣，他竟然讲了那样一个让在场的每一个人都放声大笑的滑稽故事。分析句子结构可知，空处引导定语从句，若先行词被the same，such等词修饰或其前有“so＋形容词＋不定冠词”，其后的定语从句需用as引导。]
20．(2017·江苏省高考名校联考信息优化卷(十))The famous writer is going to talk
about the European countries and people________he has visited in the past two months. A．who C．that
B．whom D．which
C [考查定语从句。句意：这位著名作家打算谈一谈他过去两个月参观过的欧洲国家和拜访过的人。分析句子结构可知，空处在此引导定语从句且在定语从句中充当宾语，先行词是the European countries and people，既有人又有物，只能用that引导，而不能用which。故选C。]
21．(2016—2017学年江苏省南通市如东县、徐州市丰县高三10月联考) He has
made a discovery，________of great importance to the progress of science and technology.
A．I think which is B．which I think is C．which I think it D．which I think it is
B [考查定语从句。句意：他做出的一项发现，我认为这对于科技的进步是非常重要的。使用非限制性定语从句，先行词是a discovery，定语从句中I think是插入语，which引导定语从句，并在从句中作主语。] 22．(2016—2017学年江苏省南通市如东县、徐州市丰县高三10月联考) The WFP
has launched a new app called Share The Meal，________the potential，people believe，is enormous as it allows smart-phone users to make donations with a simple tap on their phone. A．whose C．which
B．that D．of which
D [考查定语从句。句意：世界粮食计划署已经推出一个新的应用软件叫
作Share The Meal，人们相信它的潜力是巨大的，因为它允许智能手机的用户用手机简单地点击就可以捐赠。先行词是a new app，定语从句中完整表达是the potential of the app，所以用of which the potential，或者用whose potential引导定语从句。]
23．( 2016—2017学年江苏省盐城市高三上学期期中考试) Hangzhou，
________the dreamy West Lake and the green hills can easily capture the hearts of visitors，hosted the 2016 G20 summit. A．whose C．of which
B．which D．of whom
C [考查定语从句。句意：杭州举办了2016届G20峰会，它梦幻般的西湖和绿色的小山很容易抓住游客的心。此处意思是the dreamy West Lake of Hangzhou，关系代词和先行词之间表示“所属”关系，所以用of which the dreamy West Lake或者whose dreamy West Lake。]
24．(2017·江苏省如东高级中学、前黄高级中学、栟茶中学、马塘中学四校高三
12月联考) The death of the closest relatives，________almost every one of us has experienced，always makes people feel bitter and unbearable. A．which C．as
B．who D．the one
C [考查定语从句。句意为：最亲近的亲人的离世，这是几乎每个人都经历过的，总是让人感到痛苦不堪。as引导定语从句，指代上下文中所提到的整个事情，并在从句中作宾语。]
【导学号：25874051】
25．(2017·江苏省如皋中学高三上学期教学质量调研(三))According to the report，
the government will hold a meeting________people can voice their opinions on today's global economy. A．which C．when
B．where D．whose
B [考查定语从句。句意：根据报道，政府将举行一个会议，在会议上，人们可以说出他们对今天全球经济的看法。先行词是a meeting，定语从句中缺少地点状语，用where引导。]