1 . 听下面两段独白，根据你所听到的内容，用单词补全短文。每段独白读两遍。

The dolphin has been known as man’s best friend. Once a 28-year-old man who went swimming in the Red Sea with a group of dolphins, learnt the hard way just how caring these creatures can be. When the man was suddenly     1     by a shark, they saved him by forming a circle around him and     2     the shark away.

It’s not the first time humans are saved by dolphins and it’s been known for some time that dolphins will do for humans what they do for their own     3    . They are, in fact, the only animals in the world whose brains     4     ours in terms of size, and their     5     to feel emotion continues to attract scientists and doctors.

The only creatures that     6     dolphins, in fact, are sharks and man. We don’t necessarily harm them on     7    , but we catch them in fishing net s and we pollute the water they swim in.     8    , in fact, is one of the dolphins’ greatest problems. So with all the good they do for us, isn’t it time we started caring about them?

2 . 听下面一段独白，判断正误。正确填“A”，错误填“B”。
1. Jim Brown is a participant of the rock-climbing course.
2. The listeners are encouraged to join the programme to better their rock-climbing techniques.
3. 20 people can be admitted into the weekend rock-climbing programme.
4. People should pay 300 dollars in advance to register for the weekend programme.
5. People can register for the programme by sending the application form to the speaker.

3 . 听下面一段独白，判断正误。正确填“正确”，错误填“错误”。
1. Sharks attract people and other ocean creatures.(     )
2. The main danger to sharks is one of the human activities. (     )
3. The biggest whale shark can be twenty meters long. (     )
4. Sharks have a bad sense of smell. (     )
5. The majority of sharks live in oceans. (     )