问题 单项选择题

下列关于队列的叙述中,正确的是( )。

A) 在队列中只能插入数据
B) 在队列中只能删除数据
C) 队列是先进先出的线性表
D) 队列是先进后出的线性表

答案

参考答案:C

解析: 队列是一种操作受限的线性表。它只允许在线性表的一端进行插入操作,另一端进行删除操作。其中,允许插入的一端称为队尾(rear),允许删除的一端称为队首(front)。队列具有先进先出的特点,它是按“先进先出”的原则组织数据的。

阅读理解

阅读理解。

     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.

4. By saying "We want to be the world's most engaging aquarium" ,Jeff Swanagan means________.

A. the aquarium will attract a large number of visitors

B. the aquarium will be home to very special sea animals

C. the aquarium will be rebuilt and will be made even larger

D. the aquarium will be the largest habitat for sea life

单项选择题