四、还原信息
Canada geese do not live only in Canada. They spend spring and summer in Alaska and northern Canada. (1) They usually fly to northern Mexico, but lately many began to fly to the south of the USA. This may be because it is warmer there now than it was in the past.
Canada geese fly very fast. They can fly as fast as 100 kilometres per hour. The geese usually travel in groups of about 100, but groups of 1,000 are also common (常见的). (2) But on sunny days they can fly as high as 2,500 metres.
Canada geese know when to travel. When the day becomes shorter and the temperature gets lower, they know it is time to leave. (3) A few days before leaving, all the geese get very excited. The Canada geese make a "V" shape in the sky when they fly south. This makes it easier for them to fly through the air. Each goose takes a turn being the first goose.
(4) Some scientists think the geese use the stars at night to help them know where they are.

1-4 EDCF

五、书面表达
假如你是熊猫惜惜，请根据以下信息给人类朋友写一封80词左右的书信。

注意：1. 文中不能出现真实姓名和学校名称；
2. 书信的开头和结尾已为你写出，不计入总词数。
Dear friends,
My name is Xixi.

Yours,
Xixi

Dear friends,
My name is Xixi. I’m one of people’s favourite animals—panda. I come from Sichuan, China. I am 13 years old. I am a national treasure and a symbol of China. I usually like to play with my friends. I also like climbing trees and sitting on the trees. I live mainly on bamboo.
But I live in great danger now. My living spaces are getting smaller and smaller, because people often take land for their own use. It’s also hard for me to find enough food because of pollution.
I hope human friends can help me. I hope that people can protect the environment and give me more spaces to live in. If you can cut down fewer bamboo forests, my friends and I will live an easier life.
Yours,
Xixi