23、Barack Obama, who came into _________ power on January 20, 2009, was awarded _________2009 Nobel Peace Prize．

A．the; the          B．the; /             C．/; the           D．/; /

22、That car accident _________all his life．After that he was limited to a wheelchair．

A．damaged                                             B．destroyed

C．harmed                                         D．ruined

21、_________that developed countries want to limit the development of the developing countries in the climate conference in Copenhagen．

A．It is no possibility                                     B．It is no need

C．There is no denying                                    D．There is no chance

20、The man had expected to see all his relatives when in hospital, but _________ came to see him while many of his friends offered him their help．

A．none                   B．no one                      C．someone                 D．a(chǎn)nyone

19、— Have you ever visited the Opera House?

—Yes．When I was in Sydney, I ______ it twice．

A．have visited          B．visited           C．had visited           D．would visit

18、_______ that Marie was able to set up new branches elsewhere．

A．So successful her business was                B．So successful was her business

C．Such successful business she had              D．So successful business had she

17、________ their son away to college, the old couple got more room in the house．

A．As            B．For           C．Through             D．With

16、_____ scores of times , but he still couldn’t understand it ．

A．Having explained                              B．Having been explained

C．Though it was explained                       D．It was explained

15、So far there is no proof           people from other planets do exist．

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

14、The report indicates that the new power station produces             energy as the one built earlier．

A．twice as much       B．a(chǎn)s twice        C．twice much as             D．twice much