题目

已知数列、都是公差为1的等差数列，其首项分别为、，且，，，则数列前10项的和等于 A.55              B.70                C.85              D.100 答案：C 解析:本题考查了等差数列的通项及前项和计算． 因此，数列 也是等差数列，并且前10项和等于：Harry had a very small farm. He only had one cow but dreamed about having a large farm. He once asked his father Bill, “I’d like to have that land over there. How can I get it?” His father encouraged him to go and talk to the landowner(地主) to see how they could get the land. Harry said. “But we don’t have enough money.” His father said, “Don’t worry. Go and talk to him.”Several years passed. Harry had not only the land, but also several hundred cows. He had a happy life with his wife.Later, Harry’s wife, Sarah, had a dream. “I want to build the biggest farm in the world.” She said. They called their friend Manuel about this task. Three days later Manuel had a plan for the whole project. Then they asked, “How much will it cost?” Manuel said they needed a lot of money.“Nobody will lend us so much money to build a farm,” they thought. But the manager of the bank trusted them and their dream.A few months later, La manuel, the biggest farm in the world, was opened.【小题1】The passage tells us that _________.A． A poor farmer is always a poor farmer.B． Making your dream come true depends on (依靠)yourselfC． A good friend can help you in doing everythingD． Talk with your friends before you do everything【小题2】The reason why Harry got the land and many cows was _______.A．he was richB．he got his help from his wifeC．he worked hard to get moneyD．he borrowed money from the bank【小题3】In order to(为了) make Sarah’s dream come true(实现), Manuel _________.A．made a careful planB．lent her quite a lot of moneyC．bought the biggest farm for her.D．didn’t like her dream【小题4】The underlined word “trust” means ________.A．knowB．understandC．thinkD．believe【小题5】 From this passage, we can learn that ________.A． Harry was a rich, energetic and clever manB． Harry’s success comes from his dream amd working hardC． Harry’s father and wife were both interested in making moneyD． If you help others, you’ll get what you have paid