根据我国《票据法》的规定，下列有关汇票背书的表述中，正确的是（）。
A. 背书日期为绝对必要记载事项
B. 背书不得附有条件，背书时附有条件的，背书无效
C. 出票人在汇票上记载“不得转让”字样的，汇票不得转让
D. 委托收款背书的被背书人可以再背书转让汇票权利
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(2007年考试真题)某企业2007年3月31日，乙存货的实际成本为100万元，加工该存货至完工产成品估计还将发生成本为20万元，估计销售费用和相关税费为2万元，估计用该存货生产的产成品售价110万元。假定乙存货月初“存货跌价准备”科目余额为0，2007年3月31日应计提的存货跌价准备为()万元。
A. 一10
B. 0
C. 10
D. 12
What can be inferred from the news？
A. US President Obama has only focused on the world security issues in his speech.
B. US President Obama's visit to Moscow aims to build better relations with Russia.
C. Russia and America have reached consensus on most world security and economic issues.
D. US President Obama has delivered a speech to graduates of a polytechnic institut
A．sourcesB．resourcesC．originsD．roots
A. sources
B. resources
C. origins
D. roots
According to this passage, ______.
A. the game plan for keeping brain cells sparking doesn't work for everyone
B. Dr. Small's memory tests can show you what to do about brain aging
C. Dr. Small's advice can help us fight brain aging effectively
D. our brains can reconstruct memories themselves
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