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请根据下表回答题： 某银行持有的各种货币的外汇敞口头寸如下：币种外汇敞口头寸美元200(多头)日元欧元150(空头)英镑80(空头)港币50(空头) 若该银行对待外汇风险的态度较为激进，计量总敞口头寸时主要考虑不同货币汇率的相关性，则该银行使用的总敞口头寸应为( )。
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According to the United States government, people are classified as homeless if they have no place to stay and no expectation of finding a place for the next thirty days. Although technically accurate, that is an impersonal assessment of an enormous and very human problem. The homeless population represents all of us Americans. It includes men and women, the elderly, children, and infants. Its members are from all ethnic (种族的) groups. What they have in common is poverty. Currently in the U.S., thirty-nine million people live in poverty. When money is really tight, paying the rent or buying food often becomes a choice. Government assistance in the form of food stamps does help but, as one homeless man explains, you can’’t pay the rent with food stamps. With no money for rent, the streets and homeless shelters become the alternative. Although men constitute the largest group within the homeless population, homeless women with children are rapidly joining them. In fact, one quarter of the homeless people in the U.S. are teenagers and young children. People may become homeless for numerous reasons. However, there are certain factors that many of these individuals have in common. They include a lack of adequate education and job skills. A majority of the teenagers and adults have not completed high school. The abuse of alcohol and drugs is also a common factor. One third of the adult homeless population abuses alcohol, while one quarter of the same group uses drugs. Some members of this population suffer mental health problems. Within the past several years many institutions for the mentally ill have been closed and their patients sent "home". Unfortunately, a number of those people have no home to go to and they are unable to adequately look after themselves. Job loss in today’’s economy has also become a real factor in the loss of people’’s homes. The breakup of families through abandonment and divorce are also contributing factors, particularly when there are children involved. The parent who is left to care for the kids with inadequate income may be forced to depend on the homeless shelters to put a roof over their heads. The writer thinks that the U.S. government’s definition of the homeless reveals______.
阅读下面短文，回答文后问题。 江 楼 ①这是临流的小楼一角，立在浔阳江畔，白塔洋头。 ②江楼并排五间，我寄寓其中的一室。面积不大，建筑朴素简陋。南面一排纸窗，窗棂上雕着拙朴的图案。窗外却是一幅曼妙无比的天然图画。连绵起伏的青山横亘在前，青翠扑人。山下的小村襟山带水，零落的村舍，掩映在绿树丛中。早晚升起缕缕炊烟，斜阳影里，织结遥远的梦境。村外田畴一片，碧波无垠。一条晶莹的小河，穿过田野，蜿蜒地流向村口。村口一座石桥，两岸乌桕，把小河迎进村里。 ③窗下是镇闩潺潺的浔江，对岸有一座路亭，亭边系一只挪亚方舟式的渡船。东望白塔洋，烟波浩渺，白茫茫一望无际。普照寺玲珑透剔的琉璃阁矗立其间，远处是隐约苍茫的天涯云树。 ④这不是什么名山胜水，平凡得地图上找不到，方志中无记载，只在唐宋人的画境中似曾相识。它未经名人雅士的讽咏礼赞，不著一字，自然风流。它不是珠围翠绕、搔首弄姿的名媛闺秀，而是蓬门筚户中光彩照人的碧玉，荆钗布裙，风鬟雾鬓，自有她天生质朴的气韵。 ⑤“故乡多少佳山水，不似西湖浪得名。” ⑥我抄下刘大白的诗句，张之素壁，当作“江楼铭”。 下列对文章结构的分析，恰当的一项是：
The disease, which attacks the brain and is always fatal, entered the food chain when cattle were fed the ground-up brains and spinal cords of slaughtered sheep and other animals contaminated with the disease. Fast food’’s bad effect doesn’’t end with fears of beef contamination. Critics in the U.S. also tag all those sacks of burgers and flies with helping to 【1】 another serious health problem: obesity. Currently about 44 million American adults are obese; another 6 million are 【2】 "super-obese"—more than 100 pounds overweight. The CDC found that in 1991, only 4 states had obesity 【3】 higher than 15 percent, but by last year the number had 【4】 to 31 states. In every state, obesity was increasing in all age 【5】 . And today’’s teens, the agency says, are three times more likely to be overweight than teens in the 19【10】s. Though no study has yet established a 【6】 link between fast food and obesity rates, the expansion of fast-food chains 【7】 to be accompanied by rising waves of fat. In China, the number of overweight teens 【8】 . At the same time, similar weight 【9】 occurred in Japan and Great Britain 【10】 fast-food chains expanded in those countries.
请根据下表回答题： 某银行持有的各种货币的外汇敞口头寸如下：币种外汇敞口头寸美元200(多头)日元欧元150(空头)英镑80(空头)港币50(空头) 若该银行资产负债表上有日元资产1000，日元负债600，银行卖出的日元远期合约头寸为500，买入的日元远期合约头寸为200，持有的期权敞口头寸为50，则该银行日元的敞口头寸为( )。
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