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Proofread the given passage on ANSWER SHEET TWO as instructed. For a wrong word, underline the wrong word and write the correct one in the blank provided at the end of the line. For a missing word, mark the position of the missing word with a "∧" sign and write the word you believe to be missing in the blank provided at the end of the line. For an unnecessary word, cross the unnecessary word with a slash "—" and put the word in the blank provided at the end of the line. Like all animal species, plant species must spread their offspring to suitable areaswhere they can grow and pass on their parent’s genes. Young animals generally spread by (1) ______walking or flying. Because plants don’t have that ability, they may somehow hitchhike. (2) ______Some plant seeds scatter by blowing in the wind or floating on water. Many other plantspecies, though, trick an animal into carrying their seeds. How do they do They enclosethem within a tasty fruit and advertise the fruit’ s ripeness by its color or smell. The hungryanimal collects and swallows the fruit, walks or flies off, but later spits out the seeds some- (3) ______where far from its parent tree. Seeds can thereby be carried thousands of mi]es. It may (4) ______surprise you to learn that plant seeds can resist digestion. In fact, some seeds actuallyrequire passage through an animal’ s body before they can grow. Wild strawberries offer agood example of hitchhiking tactic. When strawberry seeds are still young and not yet (5) ______ready to be planted, the surrounding fruit is green, sour, and hard. When the seeds final (6) ______mature, the berries turn red, sweet, and tender. The change in the berries’ color serves as asignal to birds which then eat the strawberries, fly off, and eventually spit out the seeds.Naturally, strawberry plants doesn’t set out with a conscious intent of attracting birds only (7) ______when their seeds were ready to be dispersed away. Nor did birds set out with the intent of (8) ______planting strawberries. Rather, strawberry plants evolved through natural selection. Thesweeter and ruder the final strawberry, the more birds spread its ripe seeds; the greener and (9) ______more sour the young strawberry, the birds destroyed the seeds by eating berries before the (10) ______seeds were ready.
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晶体三极管处在截止状态时是( )
SECTION A In this section you will hear a mini. lecture. You will hear the lecture ONCE ONLY. While listening to the lecture, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap-filling task on ANSWER SHEET ONE after the mini-lecture. Use the blank paper fornote-taking. Now listen to the mini. lecture. Humanities DisciplinesIn many people’s eyes, the humanities disciplines seem to be dying out.However, actually, students continue to enroll in humanities courses andlots of scholarship is still published. The humanities disciplines feeldislocated, because they appear to have lost their (1)______. (1) ______And the most important one is exactly what those roots were.The history of higher education in the United States since (2)______ can (2) ______be divided into 2 periods.Ⅰ. The first period (1945—1975): A period of (3)______and known in the literature on American (3) ______education as the Golden Age, during which the composition of the highereducation system changed not too much, but the size of the system(4)______ dramatically. (4) ______ This expansion includes three factors: 1) The baby boom: a period of record (5)______that followed a period of (5) ______record low blah rates—the (6)______and the Second World War; (6) ______ 2) The relatively high domestic economic growth rate after (7)______; (7) ______ 3) The Cold War: American university had been drawn into the business ofgovernment-related (8)______research during the Second World War. (8) ______IL The second period (1975—present) A period of (9)______, during which the size of the system has grown at a much (9) ______more (10)______pace, and the composition has changed dramatically. (10) ______
单相桥式整流电路，接正常负载，已知变压器次级电压u2=28.2sin（ωt）V，则输出电压平均值Uo约为（）
TEXT D A scientist In today’s society we are now seeing more children under the age of twelve developing eating disorders. It is estimated that 40% of nine year olds have already dieted and we axe beginning to see four and five year olds expressing the need to diet. It’s a shame that children so young are being robbed of their childhoods. Why is it that so many young children are becoming obsessed with dieting and their weight I feel the family environment has a lot to do with it, along with the fact that children are constantly being exposed to the message society gives about the importance of being thin. Children raised in a dysfunctional family are at a higher risk for developing an eating disorder. In a home where physical or sexual abuse is taking place, the child may turn to an eating disorder to gain a sense of control. If they can’ t control what is happening to their bodies during the abuse, they can control their food intake or their weight. Self imposed starvation may also be their way of trying to disappear so they no longer have to suffer through the abuse. Children may also develop eating disorders as a way of dealing with the many emotions that they feel, especially if they are raised in a home that does not allow feelings to be expressed. Children who are compulsive eaters axe usually using food to help them deal with feelings of anger, sadness, hurt, loneliness, abandonment, fear and pain. If children are not allowed to express their emotions, they may become emotional eaters. Also, if parents are too involved in their own problems, the child may turn to food for comfort. Children are at a risk for developing an eating disorder if the parents themselves are too preoccupied with appearance and weight. If the parents are constantly dieting and expressing dislike towards their own bodies,the child will receive the message that appearance is very important. In some families the parents mistake baby fat for actual fat and may try to impose a diet on the child. Not only is that not right, it’s cruel. As parents you need to set a good example for your children, which means that you yourself should be involved in healthy eating patterns. Another thing to remember about children is that they eat when they are hungry and they stop when they are full. Never force a child to eat if they don’t want to. Too many families still force children to remain at the table until they have eaten everything on their plate. Doing that could cause the child to hate meal times and develop an unhealthy attitude towards food. Exercise is also an important part of everyone’s life and we need to help our children become involved in physical activity, which means the parents themselves should participate in healthy exercise. Help the child to find activities they enjoy, and activities the whole family can enjoy. They should be taught that physical activity is important in maintaining a strong and healthy body, but they should not be given the message that exercise is important in maintaining a slim figure. When the children are doing body exercises, the parents should NOT______.
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