阅读理解。 Joe was the best potato farmer in the state of Idaho, maybe the best in the whole world. He took pride in his work and did the best he could to grow the best and healthiest potatoes. At harvest time, Joe would spend his time making sure that his potatoes were ploughed out of the ground in a proper way so that they wouldn't get damaged (损害). Joe was looking forward to a great potato crop. Joe and his workers had a great potato crop but they couldn't finish the harvest yet. There was a big piece of land that was so hard that the plough (犁) was not able to dig it up. So Joe decided to leave it till the next day. The next day Joe went to dig his shovel (铁锨) into the land. He discovered that it was one big potato. He thought this must be the biggest potato in the world. But how could he get it out? This potato was bigger than a truck! Joe knew it wasn't going to be easy, but he had an idea. He decided to call a big Crane (起重机) company and asked them for their help. He called the Guinness World Records (吉尼斯世界纪录), to introduce the biggest potato in the world. After twenty minutes some reporters took pictures of the big potato and Joe. They dug it out and it made the book, and Joe became the richest farmer alive. Every day he would go outside and kiss the big potato until it slowly went bad. 1. Joe was the best potato farmer because ______ in the world. [     ] A. he grew the most potatoes B. he grew the best potatoes C. he had the biggest potato D. he was proud of his farm work 2. ______ for Joe and his workers to dig up. [     ] A. The land was too large B. The potatoes were too deep C. The land was not soft enough D. The potatoes were not big enough 3. A ______ was used to get the big potato out. [     ] A. machine B. truck C. shovel D. plough 4. From the passage we know ______. [     ] A. the big potato was sold to the Guinness B. Joe's workers also got a lot of money C. Joe's field was near to D. Joe became the richest farmer 5. The best title for the passage is ______. [     ] A. How to Dig Up Potatoes B. How to Grow Good Potatoes C. The Largest Potato in the World D. Joe and his Workers