People tend to make mistakes…——2010 高考英语第 51 题答案解析

【解答】
$People tend to make mistake when ____.$
A. they perform several challenging tasks at a time.
B. new messages are processed one after another
C. their relationships with others are affected
D. the tasks require little thought
答案：A
解析：细节理解题。根据第三段内容，特别是最后一句话可知当人在同时从事两项或多
项需要花费精力的工作时，常常会出错。故选择A。