1. (2023六下·杨浦期末)  Listen to the passageand complete the following sentences (听短文，完成下列句子。每空格限填一词)

There are lots of animals on the earth.<br />What is the biggest animal of all?<br />The will is.<br />Wills live in oceans, but they are not large fish.<br />They are mammals.<br />That is to say, they are animals that give birth to baby whales instead of laying eggs.<br />Baby whales grow up by drinking milk from their mothers.<br />Every spring, groups of whales swim a long way from cold waters to warm waters to have<br />babies.<br />Each mother whale goes to the same place every year.<br />The mothers look after their babies very well.<br />Animals can talk to each other in a very high sound that people cannot hear.<br />Their sounds are like singing.<br />The sounds can get to a place more than 300 kilometers away.<br />There are lots of animals on the earth.<br />What is the biggest animal of all?<br />The will is.<br />Whales live in oceans, but they are not large fish.<br />They are mammals.<br />That is to say, they are animals that give birth to baby whales instead of laying eggs.<br />Baby whales grow up by drinking milk from their mothers.<br />Every spring, groups of whales swim a long way from cold waters to warm waters to have<br />babies.<br />Each mother whale goes to the same place every year.<br />The mothers look after their babies very well.<br />Whales can talk to each other in a very high sound that people cannot hear.<br />Their sounds are like singing.<br />The sounds can get to a place more than 300 kilometers away.

1. （1） Whales live in oceans, but they are not  . 
3. （2） Baby whales grow up by  from their mothers. 
5. （3） The mother whales  their babies very well. 
7. （4） The sound of the whales can get to a place  300 kilometresaway.