题目内容：

 

1.The job wasn’t ___________ enough for me. I want something more creative. (富有挑战性的)

2.She is studying American ____________ at Georgetown University at present. (文学)

3.The students are working hard every day, in ___________ for the big examination. (准备)

4.Older people often complain that the younger ____________ don’t know what hard work is.

5.It takes an _________ of two weeks to finish a task like this. (平均)

6.The village schools are in great need of ______________ teachers. (有经验的)

7.Have a rest before you __________ with your reading. (继续)

8.The Internet is ___________ at a very fast speed. (发展)

9.People in this neighborhood can use the gym at no _________ cost. (额外的)

10.The Ming ___________ ruled China from 1368 to 1644. (朝代)