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...
It has long been known that birds are able to sense magnetic fields and use them to navigate,particularly when migrating south for the winter.Now researchers have found that the bird actually sees the magnetic fields with their right eye giving information to the left side of their brain.The ...
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...
How do they stay alive in the cold world?Animals do many different, amazing things to get through the winter. To find enough food and keepwarm, some animals migrate(迁徙).Many birds migrate in the fall. Because the trip can be dangerous, some travel in large groups. Forexample, wild ...
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?
根据上文They do many different amazing things to get through the winter.可知这里是指一些动物为了过冬会去到更温暖的地方。句意:这意味着它们迁徙到其他天气更暖和的地方。故答案为B。(3)D 名词辨析。A天空;B空气;C土地;D水。根据上文Many fishes migrate.They may swim to south,可知这里是指鱼冬天会...
Some birds travel in large groups.Fish may swim south, or moveinto deeper, warmer water.migrateMany insects, like white ants, movedownwards into the soilMake changes in theirbehavior or bodies.Grow new, thicker furin the fall.adaptThe ways to getCollect their winter foodin autumn.through the ...
To survive the European winter, the northern bald ibis (秃鹃) — which had once disappeared entirely from the wild on the continent — needs to migrate south for the winter, over the Alps, before the mountains become blocked. But shifting climate patterns have delayed when the birds begin to...
A. h. hornemanni of Greenland and neighbouring parts of Canada, and A. h. exilipes, which breeds in the tundra of northern North America and the Palearctic. Many birds remain in the far north; some birds migrate short distances south in winter, sometimes travelling with common redpolls. ...