下面是2010年上海世界博览会会徽，请对会徽构图及所表达含义进行说明。（4分）注

为迎接2010年上海世博会，小区居民自行修建花坛，花坛长15米，宽5米。这个花坛的周长是多少米?

2000年3月5日，A房地产开发公司(以下简称A公司)与B银行签订借款合同。该借款合同约定：借款总额为2亿元；借款期限为2年6个月；借款利率为年利率5.8%，2年6个月应付利息在发放借款之日预先一次从借款本金中扣除；借款期满时一次全额归还所借款项；借款用途为用于S房地产项目(以下简称S项目)开发建设；A公司应当按季向B银行提供有关财务会计报表和借款资金使用情况；任何一方违约，违约方应当向守约方按借款总额支付 1%的违约金。
在A公司与B银行签订上述借款合同的同时，B银行与A公司和C公司分别签订了抵押合同和保证合同。B银行与A公司签订的抵押合同约定：A公司以正在建造的S项目作为抵押，如果A公司不能按时偿还借款或不能承担违约责任，B银行有权用抵押的S项目变现受偿。B银行与C公司签订的保证合同约定：如果A公司不能按时偿还借款或不能承担违约责任，而用A公司抵押的S项目变现受偿后仍不足以补偿B银行遭受的损失时，C公司保证承担相应的补偿责任。
B银行依照约定于2000年3月6日向A公司发放借款，并从发放的借款本金中扣除了2年6个月的借款利息。2001年4月5日，B银行从A公司提供的相关财务会计资料中发现A公司将借款资金挪作他用，遂要求A公司予以纠正，A公司以借款资金应当由自己自行支配为由未予纠正。同年5月，B银行通知A公司，要求A公司提前偿还借款，A公司以借款尚未到期为由拒绝偿还借款。同年8月，B银行向人民法院提起诉讼，要求解除借款合同，并要求 A公司提前偿还借款，将用于抵押的S项目变现受偿，同时要求C公司承担保证责任。
经查：A公司实际投入S项目的资金为3 800万元，挪用资金15000万元；S项目经评估后的可变现价值为3 500万元；s项目建设取得了一切合法的批准手续，但在抵押时未办理抵押登记；C公司是A公司控股的子公司，C公司与B银行签订保证合同时未获除A公司之外的其他股东认可，并隐瞒了与A公司的关联关系。
要求：根据上述事实，回答下列问题。
(1)借款合同约定借款利息预先从借款本金中扣除是否符合有关规定如何处理
(2)根据上述提示内容，A公司应当如何向B银行支付利息
(3)B银行与A公司签订的抵押合同是否有效并说明理由。
(4)B银行与C公司签订的保证合同是否有效并说明理由。
(5)B银行可否要求解除借款合同并说明理由。
(6)B银行可否要求C公司承担民事责任为什么

男，28岁，急性胰腺炎住院1周，出院3周后仍有持续性上腹痛，体检：体温36.9℃，中上腹可扪及一包块，边界不清，最可能的诊断是（）

A.胰腺脓肿

B.胰腺假性囊肿

C.慢性胰腺炎

D.急性胰腺炎复发

E.胰腺癌

Motivation is "the driving force within individuals that impels them to action." And goals are the sought-after results_____(1) motivated behavior.Motivation can be either positive or negative_____(2) direction. We may feel a driving force toward some object or condition, _____(3) a driving force away from some object or condition. For example, a person may be impelled toward a restaurant to fulfill a need, hunger, and away_____(4) an airplane to fulfill a need of safety. Some psychologists refer to positive drives_____(5) needs, wants or desires,_____(6) negative drives as fears or aversions._____ (7), though negative and positive motivational forces seem to differ dramatically_____(8) terms of physical and sometimes emotional activity, they are basically similar in_____(9) they both serve to initiate and sustain human behavior.____(10) this reason, researchers often refer _____(11) both kinds of drives or motives as needs, wants and desires.Goals, _____(12), can be either positive or negative. A positive goal is one toward_____ (13) behavior is directed and it is often referred to as an approach object. A negative goal is _____(14) from which behavior is directed away and it is sometimes referred to as an avoidance object. Since both approach and avoidance goals can be considered objectives of motivated behavior, most researchers refer to_____(15) types simply as goals. Consider this example. A middle-aged woman may wish to remain_____(16) attractive as possible. Her positive goal is to appear desirable, and_____(17) she may use a perfume advertised to make her irresistible. A negative goal may be to prevent her skin_____(18) aging, and therefore she may buy and use face creams._____(19) the former case, she uses perfume to help her achieve her positive goal — attractiveness; in the____(20) case, she uses face creams to help avoid a negative goal — wrinkled skin.

PVC密封胶混入空气容易造成（）现象的发生。

A、胶粗

B、胶细

C、胶不平

D、断胶、炸胶