Science and technology have _A___ in important ways to the improvement oA) attachedB) assistedC) contributedD) witnessed为什么不能选A?

分类: 作业答案 • 2022-07-05 22:24:09

问题描述：

Science and technology have ___A_____ in important ways to the improvement o
A) attached
B) assisted
C) contributed
D) witnessed
为什么不能选A?

答

C) contributed
v.有助于,贡献（contribute的过去分词）
adj.贡献的,分配的；已缴入的

Science and technology have ___A_____ in important ways to the improvement oA) attachedB) assistedC) contributedD) witnessed为什么不能选A?