Ⅰ.单词集训
A．词形转换
1．I think you know our director who is currently (current) in London.
2．The government has taken a measure to maintain the stability (stable) of prices.
3．In the past few years his English has improved greatly because of his association (associate) with British people.
4．I think you can turn to Mr Smith because he will solve your problem using very practical (practice) ways.
5．As is known to all，China has greatly extended (extension) its influence in world affairs.
6．My secretary is perfectly competent (competence)，but she doesn't have much initiative(主动性)．
7．There are enormous reserves of oil still waiting to be tapped (tap) in the South China Sea.
8．Jack is too busy with his research，so he just contacts me occasionally (occasion)．
