5、已知等于( )
A. B.- C. D.
4、下列说法正确的是( )
A.命题“设,若则a>c”的逆命题为真命题;
B.,,则和为同一函数;
C.设p:“所有正数的对数均为正数”,q:“sin3>cos3”,则为真;
D.命题“”的否定是“”.
3、若,则点位于( )
A.第一象限 B.第二象限 C.第三象限 D.第四象限
2、设集合=( )
A.{1} B.{1,2} C.{2} D.{0,1,2}
1、cos210°=( )
A.- B.- C. D.
5.(2009年西城检测)More wild tigers have been seen in the forest around this area,________there used to be very few.
A.when B.where
C.what D.which
解析:选B。考查定语从句。分析题干和含义可知,空格处连词引导非限制性定语从句并在从句中作地点状语,故选B。
4.(2009年东城检测)After visiting China,most of the foreign friends said they would never forget the time________they had spent in China.
A.that B.what
C.when D.at which
解析:选A。考查定语从句。that they had spent in China是定语从句,修饰先行词the time,关系代词that在从句中作spent的宾语,可以省略。
3.(2009年南通调研)She may have missed the train,________ she won’t arrive for another hour.
A.in which case B.in her case
C.in any case D.in that case
解析:选A。考查定语从句。这是一个非限制性定语从句,所以要用in which case。
2.(2010年成都树德中学月考)Last week,only two people came to look at the house,________wanted to buy it.
A.none of them B.both of them
C.none of whom D.neither of whom
解析:选D。考查代词用法。none表示三者或三者以上都不,根据本句中的two people可排除A、C两项;选B项的话构成完整句子,两个句子之间缺连词,由此排除B项。所以答案是D项。“neither of whom wanted to buy it”是定语从句,表示“两人中没有一人想买下它”。
本单元语法--定语从句(Ⅱ)
1.(2010年江西南康中学月考)Mark was a student at this university from 2006 to 2010,________he studied very hard and was made Chairman of the Students’ Union.
A.during which time B.for which time
C.during whose time D.by that time
解析:选A。考查定语从句。此句考查“介词+关系词”引导的定语从句。during which time在那期间,符合语意。
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