题目内容：
They must try to _________ the boundaries of knowledge. 选择一项：
A.
extend
B.
increase
C.
enrich
参考答案：
选择题：They must try to _________ the boundaries of knowl
- 题目分类：国家开放大学人文英语1
- 题目类型：选择题
- 查看权限：VIP
选择一项：
A.
extend
B.
increase
C.
enrich
选择一项：
A.
extend
B.
increase
C.
enrich
The __________ were shocked to see the workers pul
The __________ were shocked to see the workers pulling the car along the street.
____________ he left school at 16, he still manage
____________ he left school at 16, he still managed to become a great writer.选择一
Believe it or not, the couple had fallen in love w
Believe it or not, the couple had fallen in love with each other ______ first gl
（ ）是有关于组织长远目标和政策的一个决定。A. 战术决策B. 常规决策C. 科学决策D. 战略决策
（ ）是有关于组织长远目标和政策的一个决定。A. 战术决策B. 常规决策C. 科学决策D. 战略决策
Popular songs are not to my ______ but to his. A.
Popular songs are not to my ______ but to his. A. advantage B. profit C. good D.