18. [2010·保定市高三二模]_______the rising house prices will be under control is what worries people most.

　 A.What　　　　　　 B.Whether

　 C.That　　　　　　 D.Why

18B考查名词性从句的连接词。句意：不断上升的房价是否能得到控制是人们最担心的。根据语境选B。

17．[2010·河北唐山市二模]It makes his life quite different　　　 he has received higher education abroad．

　 A．that　　 B．which　　 C．what D．how

17A考查名词性从句的连接词。句意：他在国外获得的高学历使他的生活很不相同。此处it为形式主语，后为that引导的主语从句。That不作成分，没有意思，只起连接作用。

16.B考查名词性从句的连接词。To后的句子为宾语从句，whoever在宾语从句中作主语，whoever= anyone who。

16. [2010·河北石家庄市一模]You may give this message to　　　 is in the office.

A. who　 B. whoever　 C. whom　 D. whomever

14. [2010·安徽省高考调研卷]President Obama is letting Congress write the details of his plan for ________ he calls health insurance reform.

A. as　　　　　 　 B. what　　　 　　　 C. that　　　　　　　 　 D. all what

14B考查名词性从句的连接词。what引导名词性从句。what = the thing which．

15 [2010·重庆西南师大5月模拟]________ people are concerned about now is the Shanghai World Expo, which ________ start on May 1st.

A. What; is due to　　　　　　　　　　 B. Which; is going to

C. That; is to　　　　　　　　　　　　 D. What; is about to

15A考查主语从句及将来时的表达法。第一空考查主语从句，what在从句中作主语；第二空be due to预定。句意：目前人们所关心的是上海世博会，世博会预定5月1日开始。

13．[2010·河北衡水中学三模]The conference aims to develop business and let people think about ______ they can have a positive influence on the planet．

　　 A．why　　 　　　　 B．that　　　 　　 C．what　 　　　　 D．how

13D 考查宾语从句的连接词。此处about后宾语从句，how在宾语从句中作方式状语。

12. [2010·浙江宁波十校联考]Some experts think the wolf's team spirit for survival is ____ is needed in today’s competitive culture.

A. that　　　　 B. what　　　　 C. which　　　　　　 D. how

12B考查表语从句的连接词。此处what在表语从句中作主语。句意：一些专家认为狼为了的生存团队精神正是当今竞争文化所需要的。

11．[2010·陕西宝鸡市质检三]No one really knows exactly when the first people arrived in　　　 we now know as California

　　 A．what　 　　　　 B．when　　　　　 C．where　　　　　 D．which　

11A考查宾语从句的连接词。What在宾语从句中作know的宾语。

10. [2010·河北石家庄市二模]　　　 is known to us all is that the 2012 Summer Olymic Games will take place in London.

A. It　 B. What　 C. As　 D. Which

10B 此题考查主语从句的连接词。What在主语从句中作主语。句意为：我们大家所知道的是2012夏季奥运会在伦敦举行。

8. [2010·云南昆明三中第七次月考]Great honors will be given to ______ have successfully rescued the victims of the earthquake.

　 A. those who　　　　　　 B. whoever　　　　　 C. who　　　　　 D. whom

8B考查宾语从句的连接词。句意：伟大的荣誉将给予成功营救地震幸存者的任何人。此处whoever在宾语从句中作主语。

9 [2010·重庆西南师大5月模拟]-I thought Stephanie and Lee were getting married in June.

-No, that’s ________ her cousin’s wedding is.

A. where　　　　　 B. when　　　　　　 C. why　　　　　　 D. how

9B考查表语从句的连接词。句意：那是她堂弟婚礼的时间。When在表语从句中作表语。