【文章內(nèi)容簡介】 orses lived in the forest. Their many toes helped the horses run over the soft wet ground. It was very hot in the forest. But the weather changed. It became cold. Many trees couldn’t live in cold weather. The trees died and fell. Open field took the place of (代替) forest. The sun made the ground dry and hard (堅硬). Horses began to change too. They began to get bigger. This took a long time. On the dry hard land, horses needed only their middle toes for running. Their middle toes became hard. After a long time horses had only one hard toe on each foot. We call this hard toe a hoof (馬蹄). 55. Long ago, the horse had four toes on each of its __________. A. back feet B. front feet C. right feet D. left feet56. Which of the four sentences is true? A. The weather stays the same the whole year all over the world. B. When the weather changed, animals began to change too. C. Cats were older than the horses. D. Horses were the same as they are.57. On the dry hard land _________. A. horses needed a lot of room for running. B. A horse needed more than four toes for running. C. horses needed only their middle toes for running. D. horses didn’t need any toes.58 Now each horse has ________ on its feet. A. one toe B. two toes C. three toes D. four toesC People have smoked cigarettes for a long time now. The tobacco used to make cigarettes was grown in what is now part of the United States. Christopher Columbus, who discovered America, saw the Indians smoking, and soon the dried leaves were transported (運輸) to Europe where smoking began to catch on. In the late 1800s, the Turks (土耳其人) made cigarettes popular. Cigarettes smoke contains at least two harmful substances (物質(zhì)), tar and nicotine. Tar, which forms as the tobacco bums, damages the lungs and therefore affects breathing. Nicotine, which is found in the leaves, causes the heart to beat faster and increases breathing rate (頻率). Smoking cigarettes is dangerous. The . Public Health Service stated that cigarette smoking is the cause of lung cancers and several other deadly diseases. The . government now requires that each package of cigarettes bear (帶有) a special warning about the danger of smoking. 59. The expression “catch on” in the passage may mean ______. A. start B. cost a lot C. bee popular D. dangerous60. Before Columbus discovered America ______.A. Europeans had smokedB. Nobody smoked in the worldC. Nicotine was not in tobaccoD. Europeans had never smoked61. Breathing is affected by ______. A. nicotine B. tar C. heat D. both A and B62. Which of the following is Not right?A. Smoking cigarettes is thought to be dangerous. B. The . Public Health Service has found the cause of lung cancers and several other deadly diseases.C. Cigarette smoking is the cause of lung cancers and several other deadly diseases. D. The . government wants smokers to know the danger of smoking.DHaving Breakfast Or Not Will it matter if you don’t take your breakfast? A short time ago, a test (試驗) was given in the United States. People of different ages, from 12 to 83, were asked to have a test. During the test, these people were given all kinds of breakfast, and sometimes they got no breakfast at all. Scientists (科學家) wanted to see how well their bodies worked when they had eaten different kinds of breakfast. The results show that if a person eats a right breakfast, he or she will work better than if he or she has no breakfast. If a student has fruit, eggs, bread and milk before going to school, he or she will learn more quickly and listen more carefully in class. The result is opposite to what some people think. Having no breakfast will not help you lose weight (減輕體重). This is because people bee so hungry at noon that they eat too much for lunch. They will gain weight (增加體重) instead of losing it. You will lose more weight if you reduce your other meals. 63. During the test, the people were given ________. A. no breakfast at all B. very rich breakfast C. different foods or sometimes none D. little food for breakfast64. The results show that ________. A. breakfast has little to do with a person’s work B. breakfast has great effect (影響) on work and studies C. a person will work better if he only has fruit and milk D. girl students should have less for breakfast65. According to (根據(jù)) the passage, some people think that if you don’t have breakfast, you will __________. A. be healthier B. work better C. lose weight D. fail the test 66. Which of the following is NOT true? A. It is bad for your health to have no breakfast. B. Too little for breakfast and too much for lunch may make you fatter. C. If you don’t eat much for lunch and supper, you may lose weight. D. The more breakfast you have, the more quickly you’ll learn in class. E“Father Christmas” (or “Santa Claus” ) has bee the human face of Christmas. Pictures will be seen everywhere of the old man with long white beard, red coat, and bag of toys. Children are taught that he brings them