1.写一封e-mail向美国笔友Jack介绍你丰富多彩的校园生活

2.央视伦敦奥运会，巅峰时刻背景音乐

少女时代---hoot，gee ，the boys, oh，MR.taxi，说出愿望吧，run devil run，

bigbang---stupid liar，谎言，一天一天，tonight，最后的问候，love song，cafe， blue,fantastic baby, bad boy ，没意思，爱情尘埃,傻瓜，红霞，somebody to love，天国，wedding dress（太阳）high high（GD&TOP）不要回家（gd&top），i need a girl（太阳），hands up，what is right，

oh yeah（gd&top feat:bom）heartbreaker（GD）

se7en---we better together，就算我不能唱歌

2ne1---我最红，go away，can‘t nobody，fire，lonely，let’s go party，i don‘t care，ugly

don’cry， you and i，in the club，don‘t stop the music，please don’t go，kiss，

fx---danger，chu，lachata，nu abo，hot summer

t-ara---loly poly，lovey dovey，谎言，TTL，cry cry，为什么这样，bopeep bopeep

因你而疯，

IU---mashmallow，你和我，好日子，someday，唠叨，他们是，

orange caramel---上海之恋，aing，

wondergirls---so hot，be my baby, nobody,tell me,

infinite---成为我的人，paradise，can u smile，

sunny hill---蚱蜢赞歌， miryo---dirty，

bigbang的真好听，

写一封e-mail向美国笔友Jack介绍你丰富多彩的校园生活

#PPR7,M1

Accounts receivable (A/R) is one of a series of accounting transactions dealing with the billing of customers who owe money to a person, company or organization for goods and services that have been provided to the customer. In most business entities this is typically done by generating an invoice and mailing or electronically delivering it to the customer, who in turn must pay it within an established timeframe called credit or payment terms.

An example of a common payment term is Net 30, meaning payment is due in the amount of the invoice 30 days from the date of invoice. Other common payment terms include Net 45 and Net 60 but could in reality be for any time period agreed upon by the vendor and client.

While booking a receivable is accomplished by a simple accounting transaction, the process of maintaining and collecting payments on the accounts receivable subsidiary account balances can be a full time proposition. Depending on the industry in practice, accounts receivable payments can be received up to 10 - 15 days after the due date has been reached. These types of payment practices are sometimes developed by industry standards, corporate policy, or because of the financial condition of the client.

On a company's balance sheet, accounts receivable is the amount that customers owe to that company. Sometimes called trade receivables, they are classified as current assets. To record a journal entry for a sale on account, one must debit a receivable and credit a revenue account. When the customer pays off their accounts, one debits cash and credits the receivable in the journal entry. The ending balance on the trial balance sheet for accounts receivable is always debit.

Business organizations which have become too large to perform such tasks by hand (or small ones that could but prefer not to do them by hand) will generally use accounting software on a computer to perform this task.

Associated accounting issues include recognizing accounts receivable, valuing accounts receivable, and disposing of accounts receivable.

Accounts receivable departments use the sales ledger.

Other types of accounting transactions include accounts payable, payroll, and trial balance.

Since not all customer debts will be collected, businesses typically record an allowance for bad debts which is subtracted from total accounts receivable. When accounts receivable are not paid, some companies turn them over to third party collection agencies or collection attorneys who will attempt to recover the debt via negotiating payment plans, settlement offers or legal action. Outstanding advances are part of accounts receivables if a company gets an order from its customers with payment terms agreed in advance. Since no billing is being done to claim the advances several times this area of collectible is not reflected in accounts receivables. Ideally, since advance payment is mutually agreed term, it is the responsibility of the accounts department to take out periodically the statement showing advance collectible and should be provided to sales & marketing for collection of advances. The payment of accounts receivable can be protected either by a letter of credit or by Trade Credit Insurance.

Companies can use their accounts receivable as collateral when obtaining a loan (asset-based lending) or sell them through factoring (finance). Pools or portfolios of accounts receivable can be sold in the capital markets through a securitization.

[edit] Bookkeeping for Accounts Receivable

Companies have two methods available to them for measuring the net value of account receivables, which is computed by subtracting the balance of an allowance account from the accounts receivable account. The first method is the allowance method, which establishes a contra asset account, allowance for doubtful accounts, or more simply, allowance, as the offset to accounts receivable. Allowance is a contra asset that offsets the accounts receivable account to derive the net accounts receivable depicted in the balance sheet. The amount of the allowance can be computed in two ways; through the analysis based on sales method and analysis based on accounts receivable method. The reason a contra asset receivable account is necessary is to adhere to the matching principle of accounting, which mandates that accrual basis companies match all revenues and expenses with the period in which expense, and crediting the allowance contra asset account. Once it has been deemed that a particular account is uncollectible, it would be necessary to take the account off a company's books by debiting allowance for doubtful accounts and crediting the associated accounts receivable account.

The second method, known as the direct write-off method, is simpler than the allowance method in that it allows for one simple entry to reduce accounts receivable to its net realizable value. The entry would consist of debiting an uncollectible expense account and crediting the respective account receivable.

For tax reporting purposes, the direct write-off method must be used; however, for financial reporting purposes, it is necessary to use the allowance method because it is a period's revenue with associated expenses-a fundamental concept of accounting known as the matching principle.

应收帐款（Accounts receivable，又为应收账款）於会计原理上，专指因出售商品或劳务，进而对顾客所发生的债权，且该债权且尚未接受任何形式的书面承诺。

央视伦敦奥运会，巅峰时刻背景音乐

Dear Jack:

Hello

Very glad to communicate with you, let me introduce you to my life.

I am a student, my campus life is not happy, but not boring. With the students, the teacher. I present the learning task is to review a semester of knowledge, in order to not forget this case study, strive for further improvement, moreover, to meet the test, so must be careful.

New year time, I with my old friends, new and old classmates went to ski. I'm not very good at skiing, but also can't be such a party-pooper, however, that was a mistake I made. I'm from the hillside, all of a sudden the roll at the foot of the mountain, then led me all the day faint, I don't want to ski!

This is my life, a remarkable journey.

Wish you good health.

姓名

xx年xx月xx日

Bob Mitchell-Silver Mountains 央视伦敦奥运会巅峰时刻背景音乐 望采纳