完形填空（共10小题，每小题1分，满分10分）
阅读下面短文，从短文后所给各题的四个选项（A、B、C、D）中，选出可以填入空白处的最佳选项。
Dolphins are mammals, not fish. Can dolphins talk? Maybe they can’t talk as human beings do, but they talk with sounds. They show their       with sounds.
Dolphins travel in a group. We call a group of fish a “school”. They don’t       like school children, but they travel together.
Dolphins talk to each other in the school. They give out different      . They tell when they are happy or sad or afraid. They say “    ” when a dolphin comes back to the school. They talk when they play. They can even make       sounds above water. However, they make many more sounds under water. People      hear these sounds because the sounds are very, very high.       make tapes of the sounds and study them.
Sometimes people catch dolphins for a large aquarium (水族馆). People can watch the dolphins in a     . Dolphins don’t like to be in an aquarium away from the sea. They are sad and lonely.
Dolphins are very friendly animals. Maybe you have heard some      that people are saved by dolphins at sea. Dolphin meat is good,       people don’t like to kill them. They say that dolphins bring good luck.

A．ideas B．feelings C．interests D．activities

A．study B．play C．hunt D．talk

A．help B．signs C．information D．words

A．Morning B．Good-bye C．Congratulations D．Welcome

A．not any B．a few C．few D．all

A．won’t B．don’t C．mustn’t D．can’t

A．Engineers B．Directors C．Scientists D．Zookeepers

A．show B．programme C．movie D．school

A．researches B．secrets C．accidents D．stories

A．so B．but C．though D．unless