Ralph and Norton can grow to be 40 feet long and live in a tank as large as a football field.What are they?They're the only two whale sharks at a North American aquarium (水族馆)．
       You can see Ralph and Norton at the world's largest aquarium,the new Georgia Aquarium in Atlanta.
The aquarium's giant tanks hold eight million gallons of water and will be home to about 100,000 fish!
       The aquarium was designed to look like a giant ship breaking through the waves.It has 60 different habitats from the sea and five galleries (展馆),each with a different theme.About 2.4 million visitors are expected to come each year."We want to be the world's most engaging aquarium." said Jeff Swanagan,the aquarium's executive director.
       Ralph and Norton arrived in June,2005 from Taiwan.They were only 15 and 13 feet long,but they may grow to be more than 40 feet long!Whale sharks are the world's largest fish.Three fulltime vets will work there to make sure that Ralph,Norton,and all of the aquarium's sea life stay healthy.Students from the University of Georgia will help run the aquarium and conduct research at the animal hospital.
       The aquarium was paid for almost completely by a $200 million gift from Berne Marcus,cofounder of the Home Depot Inc,and his wife,Billi."It's going to be the most unique aquarium in the world,"said Marcus.Marcus said the aquarium was a "thank you" note to the city of Atlanta and the State of Georgia,where the Home Depot first opened for business.

1．According to this passage,Ralph and Norton are________.

A．polar bears  
B．whale sharks
C．penguins
D．dolphins

2．The world's largest aquarium located in________.

A．Los Angeles  
B．New York
C．Atlanta
D．Miami

3．Which of the following is TRUE?
A．The aquarium was designed to look like a giant shark.
B．The aquarium's giant tanks can hold eighteen million gallons of water.
C．Ralph and Norton arrived in June,2005 from Japan.
D．Marcus helped to build the aquarium to show his thanks to Atlanta.