59 （）

The second paragraph tells us __________.

• A、underground is convenient 

• B、the advantages of underground

• C、we can have good food underground 

• D、you can spend the night underground

Which of the following is TRUE according to the 4th paragraph?

• A、Birds hardly pay attention to their young.

• B、Baby crocodiles can look after themselves well.

• C、Some dinosaurs took care of their young.

• D、Birds and crocodiles take good care of their young.