C．Children D．older persons

　　2．Why should we pay attention to the formation of habits?

　　 A．Because habits are of great help to every one of us.

　　 B．Because a man can never get rid of a habit.

　　 C．Because we are forced to do them again and again.

　　 D．Because it's hard and even not possible to throw away bad habits.

　　3．__________are formed little by little.

　　A．Good habits

　　B．Bad habits

　　C．Both good habits and bad habits

　　D．Either good habits or bad habits

　　答案与解析

　　本文叙述了人们的好习惯和坏习惯都是慢慢形成的，并且好习惯很难养成，而坏习惯很容易形成，因此提醒人们要注意自己习惯的养成。

　　1．B　词义猜测题。根据"Older persons also form bad habits lasting as long as they live"，可推知"them"指的是坏习惯，故选B。

　　2．D　细节理解题。根据第一段"Once a habit is formed，it is difficult，and sometimes impossible，to get rid of.That's why we should pay great attention to the formation of habits."故选D。

3．C　细节理解题。根据第一段开头"Habits, whether good or bad