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1、2022-2023年宁夏回族自治区中卫市大学英语6级大学英语六级真题一卷(含答案)学校:_ 班级:_ 姓名:_ 考号:_一、2.Reading Comprehension (Skimming and Scanning)(20题)1.Now cohabitation normally happens before marriage.A.Y B.N C.NG2.According to the passage, land can be polluted by _ from agriculture.A.heavy metalsB.pesticides and nitrate-poor fertili
2、zersC.slurry from livestockD.rubbish3.What do you know about power walking from the passage?A.It is a kind walking people do in the park.B.It may burn more calories than running.C.People walk so fast that they finally break into a run.D.This kind of walking sets a pace for running.4.In Japan people
3、preferred making their decisions on the basis of _.5. Feldman cited the example of wild animals to show that _.A.wild animals are good at protecting their lifeB.deceiving formed in the process of evolutionC.human beings lie in the same way as animalsD.modem people are more selfish than animals6.Ofte
4、n associated with crude oil, natural gas is principally made up of_ and other hydrocarbon gases.7.The needs of those Indians in _ with 4 areas formed by the Andean Mission are the greatest among all Indians in the three South American countries.8.The decade of the 1960s was characterized by the ever
5、-growing suspicion of the civilized worlds attempt to control nature through the use of technology.A.Y B.N C.NG9.Both blood pressure and the effects of stress will be decreased by the increase of _.10. Emergency operators can identify the precise location of cell-phone callers through GPS systems wi
6、th the use of _.11.Another technical advance in gardening in the 19th century was that people could grow plants in containers in spring and autumn only.A.Y B.N C.NG12.CaloriesFor years now, calories have been all the ragepeople are counting them and cutting them, and youd be hard-pressed to find som
7、ething at the supermarket that does not list its calories per serving somewhere on the package. But have you ever wondered what exactly a calorie is?What Is a Calorie?A calorie is a unit of energy. We tend to associate calories with food, but they apply to anything containing energy. For example, a
8、gallon (about 4 liters) of gasoline contains about 31,000,000 calories.Specifically, a calorie is the amount of energy, or heat, it takes to raise the temperature of 1 gram of water 1 degree Celsius (1.8 degrees Fahrenheit). One calorie is equal to 4.184 joules (焦耳), a common unit of energy used in
9、the physical sciences. Most of us think of calories in relation to food, as in This can of soda has 200 calories. It turns out that the calories on a food package are actually kilocalories (1,000 calories=1 kilocalorie). The word is sometimes capitalized to show the difference, but usually not. A fo
10、od calorie contains 4,184 joules. A can of soda containing 200 food calories contains 200,000 regular calories, or 200 kilocalories. A gallon of gasoline contains 31,000 kilocalories.The same applies to exercisewhen a fitness chart says you burn about 100 calories for every mile you jog, it means 10
11、0 kilocalories. For the duration of this article, when we say calorie, we mean kilocalorieWhat Calories Do?Human beings need energy to surviveto breathe, move, pump bloodand they acquire this energy from food.The number of calories in a food is a measure of how-much potential energy that food posses
12、ses. A gram of carbohydrates(碳水化合物) has 4 calories, a gram of protein has 4 calories, and a gram of fat has 9 calories. Foods are a compilation of these three building blocks. So if you know how many carbohydrates, fats and proteins are in any given food, you know how many calories, or how much ener
13、gy, that food contains.If we look at the nutritional label on the back of a packet of maple-and-brown-sugar oatmeal, we find that it has 160 calories. This means that if we were to pour this oatmeal into a dish, set the oatmeal on fire and get it to burn completely (which is actually pretty tricky),
14、 the reaction would produce 160 kilocalories (remember: food calories are kilocalories)enough energy to raise the temperature of 160 kilograms of water 1 degree Celsius.If we look closer at the nutritional label, we see that our oatmeal has 2 grams of fat, 4 grams of protein and 32 grams of carbohyd
15、rates, producing a total of 162 calories (apparently, food manufacturers like to round down). Of these 162 calories, 18 come from fat (9 cal2g), 16 come from protein (4 cal4g) and 128 come from carbohydrates (4 cal32g).Our bodies burn the calories in the oatmeal through metabolic (新陈代谢的) processes, by which enzymes (酵素) break the carbohydrates into glucose (葡萄糖) and other sugars, the fats into glycerol (丙三醇) and fatty acids and the proteins into amino acids (氨基酸). These molecules are then transported through the bloodstream to the cells, where they are ei
