已知pets = [‘ant’, ’dog’, ’cat’, ’bird’]，要对该列表中的元素排序应该使用下列哪个方法？ A: pets.sort( ) B: pets.reverse( ) C: pets.extend( ) D: pet.insert( )
已知pets = [‘ant’, ’dog’, ’cat’, ’bird’]，要对该列表中的元素排序应该使用下列哪个方法？ A: pets.sort( ) B: pets.reverse( ) C: pets.extend( ) D: pet.insert( )
The pets have to travel in _________ .
The pets have to travel in _________ .
Some people love pets and regard them as friends ________ other people dislike pets and think they may cause diseases.
Some people love pets and regard them as friends ________ other people dislike pets and think they may cause diseases.
These pets ______ a lot of care and attention.
These pets ______ a lot of care and attention.
The most popular pets in America is ( ).
The most popular pets in America is ( ).
What is one of the purposes of pets in the United States?
What is one of the purposes of pets in the United States?
How many pets does Kevin have?
How many pets does Kevin have?
Pets must be healthy if you travel with them.
Pets must be healthy if you travel with them.
The explanation of animal-behavior experts for the "clever" behavior of pets is______.
The explanation of animal-behavior experts for the "clever" behavior of pets is______.
extend
extend