本讲为2006年下半年新的教学内容，请对照教材、练习册和语法书听录音！
   
  1.       In deciding whether to pursue a course of action, they try to estimate its __ impact on the voters.
  Like dislike unlike likely alike
  Be likely to do
   
  8.     Whether voters accept this image depends more on external factors than on a candidate’s personal characteristics.
  9.        In 1991, after the Gulf War, Bush’s approval rating reached 91 percent, the highest level recorded since polling __ (begin) in the 1930s.
  Spend on + n.
  Spend (in) + doing