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缺乏维生素B12（）
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Task 2 When people print a stamp, any error made on a stamp raises its value to stamp collectors. A mistake on one inexpensive postage stamp has made the stamp worth a million and a half times its original value. More than one hundred years ago in the British colony of Mauritius, a small island in the Indian Ocean, the mistake was made. In 1847 an order for stamps was sent to a London printer — Mauritius was to become the fourth country in the world to issue stamps. Before the order was filled and delivered, a bail was planned at Mauritius’s Government House, and stamps were needed to send out the invitations. A local printer was instructed to copy the design for the stamps. He accidentally inscribed the words "Post Office" instead of "Post Paid" on the several hundred stamps that he printed. Today there are only twenty-six of these misprinted stamps left — fourteen One Penny Orange-Reds and twelve Two Penny Blues. Because of the Two Penny Blues’ rareness and age, collectors have paid as much as $16,800 for it. A stamp is worth a million and a half times its original value because ______.
Task 1 Job letters and resumes must attract the attention of busy readers, who may spend only 60 seconds deciding whether to consider you further. This article gives you the tools to write a successful letter and resume. "Successful," of course, means a letter and resume that will get you an interview. After that, your interpersonal skills will help you land the job. The letter and resume only aim to get you to the next step — the personal interview. Most job letters and resumes still get sent through the mail. However, a growing number of applicants (申请人) use the Internet to apply for jobs. For example, on-line services can place resumes into a bank used by hundreds, perhaps thousands, of companies. The resumes will be scanned with the use of software, which searches for key words that reflect abilities needed for specific jobs and then sends selected resumes to companies. Whether you use on-line techniques like e-mail and resume services or stick with the traditional approach (方式) the same basic writing principles apply. Your letter, no longer than one page, should be specific about the job you seek and your main selling points. The resume — one page or two at most — should simply, specifically, and neatly highlight (强调) your background. According to the passage the purpose of writing a job letter and resume is to ______.
Task 5 Established in 1987, Central Mountain Air (CMA) is a Western Canadian privately owned and operated company. It offers scheduled and charter flights to over 17 British Columbia and Alberta communities. At present, CMA employs over 300 people, including administrative, maintenance and flight personnel maintaining bases in Smithers, Vancouver, and Calgary. CMA’s headquarter is located in Smithers B.C. Its regional administrative, sales and marketing is conducted from our office in Calgary. Central Mountain Air currently operates the following business streams: — CMA the Regional Airline — CMA Charter Services — CMA Contract Services CMA connecting customers traveling to or from Campbell River, Comox, Quesnel & Williams Lake, B.C. through Vancouver’s International airport will be provided with onward boarding passes and through checked baggage. Where is CMA’s regional administrative, sales and marketing conducted
长江股份有限公司已拥有资金总额20000万元，其中股本6000万元(每股面值1元、发行价格2.5元)、资本公积金9000万元、长期债券5000万元(年利率为4%)。 公司为扩大生产规模，急需购置一台价值为350万元的W型没备，该设备购入后即可投入生产使用，预计使用年限为4年，预计净残值率为2%，按年限平均法计提折旧，该设备每年可为公司增加税前利润50万元，期满能收回残值7万元。现有甲、乙两个筹资方案可供选择：甲方案按每股3.5元增发股票100万股；乙方案按面值增发350万元的长期债券，债券票面年利率为5%。该公司适用的企业所得税税率为25%。 已知当年限为4年、年利率为5%时，1元的现值系数和终值系数分别为0.822和 1.216，1元的年金现值系数和终值系数分别为3.546和4.31。 根据上述资料，回答下列问题：(计算结果保留两位小数) 若该公司的资金成本为5%，则购置W型设备这一投资项目的净现值为( )万元。
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