问题
选择题
Besides being able to walk on for three days without drinking, camels can also live for a long time ______ small quantities of food.
A．with
B．on
C．by
D．without
答案
答案：B
题目分析：句意：除了能够不喝水一直组三天，骆驼还可以以少量的食物为生很长时间。这里使用了live on“以…为生”，选B。