How many hours do you sleep every night? A study says that sleeping less has _______ to do with people’s feelings.

Studies in the past showed that losing sleep made people sad and worried. Researchers (研究人员) at Iowa State University also found that losing sleep could make people get _______ easily. They put some people into two groups. One group had seven hours of sleep every night. They could get enough sleep. But the other group only slept for four and a half hours. It was much _______ than that of the first group.

After a few days, _______ groups took a test. Researchers asked them to rate (评价) different things when they listened to some noise. When the noise was louder, the people who slept less were angrier. The result showed how _______ it is to get enough sleep.

One day a village chief (主任) was walking through the forest when he saw a farmer cutting wood. It was _________ work and the man was very tired. As the chief watched there, he heard someone saying “Hunh!” every time the axe came down on the wood. Then the chief saw a man not far. He was the _________ man in the village. The village chief didn’t know _________ he was doing this, but he didn’t say anything.

The next day, the farmer went to _________ his wood. As he was going to put the coins into his bag, the lazy man came up to him and said, “_________ of the money is mine. I did half of the work.”

The farmer was _________ and said, “Why did you say so? I cut the wood all by myself.” The lazy man didn’t think so. The two men began to _________. At last, they went to the village chief. After listening to both of them, the chief told the farmer to put the coins on a desk. The coins jingled (发出叮当声) _________ the desk. The chief then said to the lazy man, “Did you _________ that?”

“Yes,” the lazy man answered.

“Great,” the village chief said. “The jingle is _________ and the coins are the farmer’s.”

Hearing this, the lazy man didn’t know what to say and left unhappily.