People who tend to focus on ______ while speaking a foreign language may find that they

worry too much about making mistakes.[ ]

A. fluency  

B. agency

C. policy

D. accuracy

生态影响的替代方案原则上应达到与原拟建项目或方案同样的目的和效益，并在评价工作中应描述替代项目或方案的( )。

A．优点和缺点

B．优点

C．缺点

D．经济效益