9．The authorities showed no signs of ________ to the kidnapper’s demands.

8．In my first job interview，I waited for more than two hours before I was finally ________.

7．The scientist has ________ a plan to measure Mars’ atmosphere.

6．I ________ those who keep complaining about their life without thinking of any ways to improve it.

5．Let’s start to ________ the good apples from the bad ones.

4．The king decided to retire and ________ the power to his son.

3．I informed the police of a theft that took place，and they have promised to ________ the matter.

2．We had to think of a way to ________ the spread of the infection.

1．We were short of water but we could ________ for another day.

10．Progress has been made towards a political c________ between the two nations.

答案：1.security 　2.expense　3.appointed　4.furnished　5. expose　6.distributed　7.acquaintance　8.intends　9.strengthened　promise