【正文】 so deep that large ships can go about two thousand miles upon it. Besides transportation, rivers give food, water to drink, water for crops, and chances for fun and recreation for the people who live along their banks. In order to increase the supply of water for crops, engineers sometimes build a dam(大壩 ) across a river and let a lake form behind the dam. Then people can use the water not only to irrigate(灌溉 ) their fields but also to make electricity for their homes and industries. However, large cities and industries that are located upon rivers often make problems. As the cities grow in size and industries increase in number, the water in the rivers bees polluted with chemicals and other materials. People are learning the importance, however, of doing more to keep their rivers clean if they want to enjoy the benefits(利益 ) of this natural resource. greatest river for navigation is _________. A. the Amazon B. the Nile C. the Mekong D. the Mississippi is Wrong? Nile is in India. every country has at least one important river. cities are located on rivers. play an important part in the lives of people. building a dam, people can use the water for______. A. keeping the rivers clean B. only making electricity C. washing clothes D. irrigation and making electricity water in the river is polluted because of _____. A. people’ s drinking water too much B. people’ s swimming in the river too much C. chemicals and other materials D. people’ s building a dam across a river best title of the passage is _________. A. Rivers in Cities B. The Importance of Rivers C. Transportation D. Natural Resources F Arthur Robert Ashe Jr. was the first AfricanAmerican player to take part in the international sport of tennis at the highest level of the game. He was born on July 10, 1943. When Arthur was 6, his mother died. Arthur, with his father and his brother, lived near a large park in Richmond, Virginia. His father was the manager of the park. He took care of the park and made sure everything was right. Arthur was allowed to play in the park when he was seven years old. He was quite energetic. A swimming pool, tennis courts, and baseball diamonds (棒球場 ) were in the park. Arthur spent a lot of time playing there. He did well in sports, but he had never tried to play tennis. He often watched the tennis players. Sometimes there were tennis lessons, and Arthur would watch even more carefully. The young man teaching the lessons noticed Arthur. His name was Ronald Charity. Mr Charity asked Arthur if he wanted to learn to play tennis. Arthur was excited and agreed. Arthur learned very quickly. Mr Charity found Arthur would grow up to be a good tennis player. By the time he was ten, Arthur won a tournament (聯(lián)賽 ). Many older and bigger players came to the park trying to win the prize, but Arthur beat them. He became known as “ the kid who could play tennis” . Arthur grew up to be one of the first successful AfricanAmerican tennis players. He played and won all over the world. ( )66. Which question is answered in Paragraph 2? A. Where did Arthur grow up? B. Why did Arthur like tennis best? C. When was Arthur born? D. What did Arthur like to do at school? ( )67. The park offered people all of these EXCEPT ____. A. tennis B. football C. baseball D. swimming ( )68. How did Arthur meet Mr Charity? A. Arthur’ s father asked Mr Charity to give Arthur tennis lessons. B. While swimming at the pool, Mr Charity met Arthur. C. While teaching tennis, Mr Charity saw young Arthur. D. Mr Charity noticed young Arthur was playing tennis well. ( )69. What did Arthur do for the first time at the age of ten? A. He entered the park where his father worked. B. He copied tennis movements without holding a racket. C. He pretended to hit a tennis ball back and forth over a . D. He played tennis better than players who were older than he was. ( )70. This article is a(n) ____. A. biography (傳記 ) B. diary C. advertisement D. piece of news G Is the whale the world’ s largest fish? No. It looks like a fish, but it is really a mammal (哺乳動(dòng)物 ). Then what’ s the world’ s largest fish? It’ s the whale shark. Although the whale shark is our biggest fish and lives in many oceans around the world, few people have ever heard of it. Scientists have not been studying whale sharks for very long. Much more needs to be learned about them. A whale shark is sometimes called a “ gentle giant (溫柔的巨人 )” . It likes to be alone and doesn’ t care a bit about divers or humans. The biggest whale shark weighed 24,250 pounds and was nearly 40 feet long. This makes it heavier and longer than a school bus. Inside its huge mouth are great numbers of very small teeth. To count all of them, you’ll need to do some maths. The whale shark’ s teeth are arranged in rows. There are between eleven and thirteen rows on each jaw (顎 ) and around three hundred teeth in each row. However