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回答题:<br>New Foods and the New World<br>In the last 500 years, nothing about people--not their clothes, ideas, or languages—has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree by South American Indians. The Spanish introduced it to the rest of the world during the 1500&39;s. And although it was very expensive, it quickly became fashionable. In London, shops where chocolate drinks were served became important meeting places. Some still exist today.<br>The potato is also from the New World. Around 1600, the Spanish brought it from Peru to Europe, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the "Potato Famine" of 1845--1846, and thou-sands more Were forced to emigrate to America.<br>There are many other that that have traveled from South America to the Old World.. But some others went in the opposite direction. Brazil is now the world&39;s largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia. It was first made into a drink by Arabs during the 1400&39;s.<br>According to an Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush. He tried one and experienced the "wide-awake" feeling that one-third of the world&39;s population now starts the day with.<br>According to the passage, which of the following has changed the most in the last 500 years? 查看材料

A. Food
B. Chocolate
C. Potato
D. Coffee

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根据下面材料,回答题。<br>Spacing in Animals<br>Flight Distance<br>Any observant person has noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it flees. "Flight distance" is the terms used for this interspecies spacing. As a general rule, there is a positive relationship between the size of an animal and its flight distance- the larger the animal, the greater the distance it must keep between itself and the enemy. An antelope will flee when the enemy is as much as five hundred yards away. The wall lizard&39;s flight distance, on the other hand is about six feet. Flight is the basic means of survival for mobile creatures.<br>Critical Distance<br>Critical distance apparently is present wherever and whenever there is a flight reaction.<br>"Critical distance" includes the narrow zone separating flight distance from attack distance. A lion in a zoo will flee from an approaching man until it meets a barrier that it cannot overcome. If the man continues the approach, he soon penetrates the lion&39;s critical distance, at which point the cornered lion reverses direction and begins slowly to stalk the man. Social Distance<br>Social animals need to stay in touch with each other. Loss of contact with the group can be fatal for a variety of reasons including exposure to enemies. Social distance is not simply the<br>distance at which an animal will lose contact with his group--that is, the distance at which it can no longer see, hear, or smell the group- it is rather a psychological distance, one at which the animal apparently begins to feel anxious when he exceeds its limits. We can think of it as a hidden band that contains the group.<br>Social distance varies from species to species. It is quite short--apparently only a few yards--among some animals, and quite long among others.<br>Social distance is not always rigidly fixed but is determined in part by the situation. When the young of apes and humans are mobile but not yet under control of the mother&39;s voice, social distance may be the length of her reach. This is readily observed among the baboons in a zoo.<br>When the baby approaches a certain point, the mother reaches out to seize the end of its tail and pull it back to her. When added control is needed because of danger, social distance shrinks. To show this in man, one has only to watch a family with a number of small children holding hands as they cross a busy street.<br>Which of the following is the most appropriate definition of Flight Distance? 查看材料

A. Distance between animals of the same species before fleeing
B. Distance between large and small animals before fleeing
C. Distance between an animal and its enemy before fleeing
Distance between certain animal species before fleeing

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根据下面材料,回答题。<br>The Drink Your Body Needs Most<br>1 Our bodies are estimated to be about 60% to 70% water. Blood is mostly water and our muscles, lungs, and brain all contain a lot of water. Water is needed to regulate body temperature and to provide the means for nutrients (滋养物) to travel to all our organs. Water also transports oxygen to our cells, removes waste, and protects our joints and organs.<br>2 We lose water through urination (排尿), respiration (呼吸), and by sweating. If you are very active, you lose more water than if you do not take much exercise. Symptoms of mild dehydration (脱水) include chronic pains in joints and muscles, lower back pain, headaches,and constipation (便秘) A strong smell to your urine, along with a yellow color indicates that you are not getting enough water. Thirst is all obvious sign of dehydration and in fact, you need water long before you feel thirsty.<br>3 A good rule of thumb (好的做法) is to take your body weight in pounds and divide that number in half. That gives you the number of ounces (盎司) of water per day that you need.For example, if you weigh 160 pounds, you should drink at least 80 ounces of water per day.If you exercise you should drink another 8-ounce glass of water for every 20 minutes you are active. If you drink coffee or alcohol, you should add at least an equal amount of water.When you are traveling on an airplane, it is good to have 8 ounces of water for every hour you are on board the plane.<br>4 It may be difficult to drink enough water on a busy day. Be sure you have water handy at all times by keeping a bottle for water with you when you are working, traveling, or exercising. If you get bored with plain water, add a bit of lemon for a touch of flavor. There are some brands of flavored water available, but some of them have sugar or artificial sweeteners that you don&39;t need.<br>Paragraph 1 __________ 查看材料

A. Ounces of water needed per day
B. Importance of water
Composition of water
D. Signs of dehydration
E. Supply of water
F. Necessity for bringing a bottle for water

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根据以下材料,回答题<br>Middle Age: A Low Point for Most<br>People around the globe hit the height of their misery and depression in middle 51_________ ., a new international study suggests. The finding by British and American researchers was based on an analysis of well-being among approximately 52_________ million people in 80 nations. With few exceptions,the observation appears to apply across the board, regardless 2 gender (性别) , culture,geography, wealth, job history, education, and marriage or parental status.<br>"The scientific fact seems to be that happiness and positive mental health follow a giant "U" 53_________ through life," said study author Andrew J. Oswald, a professor of economics at Warwick University in Warwickshire, England. "For the average person, it"s high when you"re 20, and then it slowly 54_________ and bottoms out in your 40s. But the good news is that your 55_________ health picks up again, and eventually gets back to the high levels of your youth."<br>The finding was 56_________ on the pooling of several different sources of happiness data,including: two multi-decade happiness/satisfaction surveys (first launched in the 1970s), involving about 500,000 American and Western European men and women; four rounds of the 80-nation "World Values Survey" 57_________ between 1981 and 2004 in North America, Eastern and WesternEurope, Asia, Africa, Australia, and Central and South America; and a 2004-2007 survey 58_________ nearly 1 million Britons.<br>The bottom-line: For most people throughout the world, the highest probability for 59_________ striking is around 44 years of age.<br>In the United States, however, some as-yet unexplained 60_________ differences were observed, with happiness among men dipping the most in their early 50s, whereas women hit their nadir (最低点 ) around the age of 40.<br>The researchers cautioned that cheerful people tend to live longer than unhappy. 61_________ – a fact that might have skewed (使偏斜) the overall finding. But they also suggested that evidence of a happiness 62_________ might simply reflect a midlife choice to give up long-held but no longer tenable (守得住的) aspiration (志向), followed by a senior"s sense of gratitude for having successfully endured 63_________ others did not.<br>"That said, some might find it helpful simply to understand the general 64_________ of mental health as they go through their own life," said Oswald. "It might be useful for people to realize that if they are 65_________ in their 40s this is normal. It is not exceptional. And just knowing this might help".<br>回答(51)题 查看材料

A. age
B. place
C. height
D. degree

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