单选题Water, water everywhere. It lasted almost two months, but in August it ended. It left 45 people dead and $10 billion worth of damage in nine states of USA. It was quite a big Mississippi flood ever recorded. In St. Louis, Missouri, 9,000 people were forced to leave their homes while the city was in danger. St. Louis is just downriver from the points where the Missouri and Illinois Rivers flow into the Mississippi. All three rivers were flooding. But the city escaped the worst when levees (堤) broke upriver. A levee is built of fiver sand and clay (粘土). Eleven miles of flood walls were built in the late 1960's. The walls are 18 inches thick and 5 to 22 feet high. They were designed to protect against a 52-foot flood. In St. Louis, water almost reached the top of flood wails. It measured 49.4 feet.

单选题Millions of hamburgers are eaten by pepole in every comer of the world every day. Together. with hot dogs and Coca-Cola, hamburgers have been the most important American contribution (贡献) to international eating habits. The name "hamburger" has nothing to do with ham (火腿). It is believed that the hamburger was first brought to the United States by Germans from the city of Hamburg some time in the 1850s. From then on the hamburger became a kind of popular American fast food. Now young people in Asia, Europe and South America have learned to eat while on the move; a hamburger in one hand and a soft drink in the other. There have been cries to anger from Italy and Spain about the shortening of the usual lunch break. Instead, young people have discovered a lunch for which they don't have to stop at all. However, there are clouds over the hamburger's world. People who concern about health dislike the high animal fat in the hamburger. They think the time saved seems a high price to pay for poor health. The packages in which hamburgers are usually served are causing serious pollution problems in many large cities. Big hamburger companies are destroying large areas of South American rainforest to produce the cheap meat they need. So, will the hamburger celebrate its next century?

单选题On receiving the letter, he found the letter ______.

单选题If a driver wants lo leave his car and go to the shops, ______.

单选题If your mother wants to tell you something, she uses 1 . Birds can not 2 as we do. But some birds can make sounds to 3 their young of danger. They have their own 4 to make the young birds do 5 things. The jackdaw(寒鸦)is a kind of blackbird that 6 in Europe. Jackdaws live together 7 flocks (群). Young jackdaws do not know their 8 When an older jackdaw 9 a dog, it makes a 10 rattling (咯咯响的)sound. The younger birds know this sound means an enemy is 11 . The sound warns them and 12 them to know their enemies. If a young jackdaw is in a 13 place, a jackdaw parent flies 14 him from behind. The parent bird flies low over the young birds back. The parents tail feathers move quickly from side 15 side. It is trying to say," 16 me." At the same time, the parent calls 17 , "Key-aw, key-aw." The parents means, "Fly 18 with me." The young bird then follows the older one home. Young jackdaws do not have to learn 19 certain sounds mean. They know the 20 of these sounds from the time they hatch.

单选题Which state laid claim to the largest lan&holdings?

单选题It was about 600 years ______ the first clock with a face and hour hand was made.[A] that[B] until[C] before[D] since

单选题Old Reese became angry because ____________.

单选题

单选题Howlongisbegoingtostay?

单选题What is the woman looking for?

单选题One of the qualities that most people admire in others is the willingness to admit one's mistakes. It is extremely hard sometimes to say a simple thing like "I was wrong about that," and it is even harder to say, "I was wrong, and you were right about that. " I had an experience recently with someone admitting to me that he had made a mistake fifteen years ago. He told me he had been the manager of a certain grocery store in the neighborhood where I grew up, and he asked me if I remembered the egg cartons. Then he related an incident and I began to remember vaguely the incident he was describing. I was about eight years old at the time, and I had gone into the store with my mother to do the weekly grocery shopping. On that particular day, I must have found my way to the dairy food department where the incident took place. There must have been a special sale on eggs that day because there was an impressive display of eggs in dozen and half-dozen cartons. The cartons were stacked three or four feet high. I must have stopped in front of a display to admire the stacks. Just then a woman came by pushing her grocery cart and knocked off the stacks of cartons. For some reason, I decided it was up to me to put the display back together, so I went to work. The manager heard the mouse and came rushing over to see what had happened. When he appeared, I was on my knees inspecting some of the cartons to see if any of the eggs were broken, but to him it looked as though I was the culprit. He severely reprimanded me and wanted me to pay for any broken eggs. I protested my innocence and tried to explain, but it did no good. Even though I quickly forgot all about the incident, apparently the manager did not.

单选题You ______ him out though you were very busy.

单选题His parents wouldn't let him marry anyone ______ family was poor. A. of whom B. whom C. of whose D. whose

单选题If you want to use Windows 2000, but your computer only has 64 MB, what will you have to do?

单选题There are several______ near the high school.

单选题Turner almost ______ that he hadn't told him that bad news, but all was too late.

单选题Where'sGeorgegoingprobably?