If we find a bird nest (巢), we will have a good place of watching and knowing about birds.

If we find a bird nest (巢), we will have a good place of watching and knowing about birds. Birds sit on eggs and take care of their babies from April to June. Because the baby birds are too young to leave the nest, parents often go to look for food and come back in several minutes. So it is good to watch birds. When we watch birds, we'd better hide ourselves in a close place to the nest, and it's better to use binoculars (双筒望远镜).
But how do we make a bird nest? A good bird nest must be very fine, strong, thick and comfortable. If you want to make one, please follow these:
a) Each nest must have six boards (木板) for its cover and floor, for its left and right sides, and for its front and back sides. Don't make the boards too slippery (滑的).
b) Dig a small hole in the front of the nest as a door. The door is big enough so birds can fly in or out easily.
c) Make sure the rainwater can't go into the nest.
d) One piece of the board should be easy to open.
e) Don't forget to colour the nest.
【小题1】We need near a bird nest if we want to watch and know about birds.A．a good place B．some treesC．to sit on eggs D．to make a bird net【小题2】When we're watching birds, we have to .A．look after the birds more often B．use the binoculars to catch the birdsC．hide ourselves to make the birds do everything as usual D．catch the birds at last【小题3】We should leave a hole in the front of the nest so that easily.A．we can clean the nest B．birds can fly in or outC．we can hang it D．we can make it【小题4】According to the text, we can make a bird nest like Picture with the boards.A

(答案→)A 解析：这篇短文主要讲述了如何观察鸟类及制作鸟巢的方法。【小题1】根据第一段If we find a bird nest (巢), we will have a good place of watching and knowing about birds.描述，可知选A。【小题2】根据第一段When we watch birds, we'd better hide ourselves in a close place to the nest, 描述，可知选C。【小题3】根据b) Dig a small hole in the front of the nest as a door. The door is big enough so birds can fly in or out easily.描述，可知选B。【小题4】根据短文最后关于如何制作鸟巢的五点提示，可知选C。

就是这个解释