题目内容：

It can be dangerous to travel by sea. Ships sometimes sink (沉没) far away from land. When this happens, the sailors (水手) have to get into small boats. If another ship does not come and help them and they do not have enough food or water, they may die.

Most people believed that people would be very ill if they drank sea water. A doctor called Alain Bombard did not believe this. He thought that people could stay alive by drinking sea water and eating small fish and plants from the sea.

On 19th October, 1952, he set out in a small ship to cross the Atlantic Ocean from Canary. He did not take any food or water with him. Every day Dr Bombard drank just a little sea water. He also caught fish and took small plants from the sea for food. 65 days later, Dr Bombard reached Barbados safely. He travelled 2,750 miles from Canary to Barbados.

He looked healthy although (尽管)he lost 20 kilos. He showed that people could live on sea water and fish and plants from the sea.

1.This passage mainly talks about ______.

A. how dangerous travelling by sea is    B. why people like travelling by sea

C. what sea water can be used to do    D. whether(是否)people can drink sea water

2.What does the underlined phrase "stay alive" mean in English?

A. Be active（积极的） and happy.    B. Continue to live.

C. Stay healthy.    D. Become busy.

3.From the passage, we can know that Dr Bombard reached Barbados in ______.

A. October, 1952    B. November, 1952    C. December, 1952    D. January, 1953

4.Dr Bombard wanted to show that ______.

A. sea water was harmful to people    B. fish and sea plants were good for people

C. people could live on sea water, fish and plants    D. he could travel across the Atlantic Ocean by himself

5.Which of the following is TRUE according to the passage?

A. It's good for people to drink sea water every day.

B. Dr Bombard just lost some weight when he reached Barbados.

C. People can stay in the sea without food for quite a long time.

D. Dr Bombard took enough food with him during his trip.