命令：>;>;>;pets=('dog','cat','bird','dog')>;>;>;pets.index('dog')执行结果为： A: 0 B: 1 C: 2 D: 3
命令：>;>;>;pets=('dog','cat','bird','dog')>;>;>;pets.index('dog')执行结果为： A: 0 B: 1 C: 2 D: 3
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.
10.Consult _____ for questions about earthquakes. a. the six index b. index six c. sixth index d. index numbering six A: the six index B: index six C: sixth index D: index numbering six
10.Consult _____ for questions about earthquakes. a. the six index b. index six c. sixth index d. index numbering six A: the six index B: index six C: sixth index D: index numbering six
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______.