解析 Birds **migrated** from north to south last week. 问题是 Birds___(migrate) from north to south last week. 空格处需要根据句意及语法规则填写单词。 句子意思是:鸟类上周从北方迁徙到南方。 last week提示句子应该用一般过去时,migrate的过去式是migrated。反馈...
People plant a great number of young trees in the mountains.When the trees grow big and tall enough, they are cut down by workers and carried out of the mountains to the paper mill where fine paper is made from wood.Then it is taken to every corner of the country and used for differe...
From biology classes at school, we know about animal migration. Birds flying south for the winter is a clear example of a seasonal migration. Animals migrate within one country and across borders. National borders are obviously of no importance for them. Human migration is a narrower term that ...
It must be the autumn. That is a joyful season with beautiful sceneries. Autumn weather is unpredictable and beautiful. It is the transition from hot to cold weather. Trees bare their leaves, birds migrate south and the nights are cool. 4.Has the weather in your country changed much in th...
Many birds migrate during the winter season. Common Curiosities What causes a Season to change? The Earth's axial tilt and its orbit around the sun cause seasons to change. 14 How is Climate different from daily weather? Climate is the long-term average of weather patterns, while daily weath...
and it's one reason why this isn't a perfect theory.It does cost the whales energy to migrate, but it's easier for whales to save energy in warm water than it is to save energy in cold water, so there might still be, you know, a good reason to move south for the winter. OK?
Migrating south for the winter is a serious undertaking. Birds fly thousands of miles, risking their lives against predators and the elements just to find a viable food supply. It begs the question: why migrate at all? Why don't birds just stay in the tropics where it's warm year-round...
They do many1.(difference)amazing things to get through the winter. Some of them “ migrate(迁徙)". This means they travel to other 2.(place) where the weather is warmer or where they can find food.Many birds migrate in autumn. Because the trip can be 3.(danger), some travel in ...
Winter is cold. People live in warm houses. What will animals do? Animals are B . They do many different, amazing things to get through the D Some of them migrate. This B they travel to other places where the weather is warmer.Many birds migrate in autumn.Because the trip can be A ...
What do Hummingbirds Eat in the Winter? Many northern species of hummingbirds migrate south in the winter. This allows them to maintain a similar diet that they enjoy during the spring and summer: a combination of flower nectar and arthropods. They don’t really have a specific diet in th...