Question

______children get older, Doherty said, their brains may develop the ability to indentify visual  context.

1. A.
   As
2. B.
   When
3. C.
   While
4. D.
   Since

Answer 1

A
试题分析：As随着；When当……时候；While当……时候；Since既然。句意：随着年龄的增长，大脑会形成辨认视觉环境的能 力。根据句意故选A.
考点：考查连词的用法。
点评：本题难度适中。判断从句中用哪个连词，需用记住连词的用法，在句中的作用，连词也是高考的热点，需要考生平时多练习。需要考生会分析句子成分理解句意。
即学即练：______you can't answer the question, perhaps we'd better ask someone else.
A. As           B. When            C. While          D. Since
解析：D。句意：既然你无法回答这个问题，我们最好再问问别人。