单选题 Some years ago the captain of a ship was very interested in medicine. He always took medical books to sea and liked to talk about different illnesses.
One day a lazy sailor on his ship pretended to be ill. He lay on his bunk(铺) and groaned as if he were very sick. The captain came to see him and was very pleased to have a patient to look after. He told the man to rest for a few days and made the other sailors to do his work. Three days later another sailor pretended that he had something wrong with his chest. Once more the captain looked in his medical books and told the "sick" man to have a rest.
The other sailors were very angry because they had more work to do. The patients had the best food and laughed at their friends when the captain was not looking. At last the mate(大副) decided to cure the "sick" men. He put some soap, glue and other unpleasant things together. Then he got permission from the captain to give his new medicine to the "sick" men. When they tasted the medicine, they really did feel ill. It was so horrible that one of the patients jumped out of his bunk, ran up on deck and climbed the highest mast on the ship. He did not want any more medicine.
The mate told both of the men that they must take the medicine every half an hour, night and day. This soon cured them. They both said they felt better and wanted to start work again. The captain realized that the men had tried to deceive him so he made them work very hard for the rest of the voyage.

单选题 The first sailor pretended to be ill because he wanted to ______.

单选题 When the captain knew a sailor was ill, he ______.

单选题 The patients felt better quickly because ______.

单选题 When the captain knew he had been deceived, he ______.

单选题 Which of the following best summarizes the passage?