题目内容
If you live in the United States, you’re almost 1.(certain) seen at American crow(乌鸦). Crows range from southern Canada throughout the United States. As2.adult, this bird is entirely black from bill to tail, except for its brown eyes. These3.(noise) birds are often recognizable by their special, loud cry, called a caw. There are often mistaken4.the common raven(渡鸦),but ravens are5.(large), and they have differently shaped bills and pointed wings and tails.
American crows often live family groups. Both members of a breeding pair help build the nests, and the female crow usually6.(lay) four or live eggs in spring or summer. After about five weeks in the nests, the young birds begin learning how to fly and catch prey. Crows sometimes stay near the spot7.they were born to help raise other young crows.
Crows will eat almost anything, from insects and small animals such as frogs fruit and nuts. They prefer open areas with access to trees and they can sometimes 8.(find)around vegetable gardens. Crows also frequently live in suburban9.(neighbor) and in parks. Crows are considered 10.(be)very intelligent birds.
