[单选题]以下哪个版本AutoCAD不存在64位版本（ ）。
A.A、A、utoC、A、D2008、
B.B、AutoC、AD2009、
C.C、AutoC、AD2010、
D.D、AutoC、AD2014

(三)[背景资料]
某大型装饰公司(简称A公司)与业主签订某商住楼精装修总承包合同，合同约定：机电专业工程由B公司施工承包。开工日期为2008年4月1日，竣工日期为2009年5月31日。每月25日提交工程量报告，次月10日支付工程进度款。
在施工过程中发生如下事件：
事件1：工程开工后，A公司每月按时提交工程量报告，2个月过去了，业主迟迟不付工程款，A公司口头催要过多次，仍没有支付工程款，于是A公司立即停止施工，以催要工程进度款。
事件2：卫生洁具安装过程中，因业主提供的卫生洁具型号不对及部分洁具有瑕疵，需要退货，于是B公司直接去向业主反映问题并提出窝工索赔。
事件3：B公司将采暖劳务分包给D劳务公司，D公司编制了施工方案，经B公司项目经理审批后实施。
事件4：在工程交付之前，有一处水管爆裂，给业主造成损失，B公司以与业主无合同关系为由拒绝承担责任，而A公司又以自己不是实际施工人为由推卸责任。

Climate, more than any other single factor, determines the distribution of life on earth. Climatic boundaries establish the limits within which organisms can survive. Plants, even more than animals, must be well adapted to climate in order to survive. They cannot move about or take shelter but must be equipped to endure whatever weather conditions. In the cold north pole, for example, low growing mosses(苔,藓) all hug the ground for shelter from icy winds.
Animals, despite their ability to move about and find shelter, are just as much influenced by climate as plants are. Creatures such as the camel and the penguin are so highly specialized that they have an extremely limited distribution. Others, such as bears, are flexible enough to adapt to a broad range of climates. Ocean-dwelling organisms are just as sensitive to climate changes in this temperature and salinity as land animals.
Human beings are among the least specialized of all animals and live almost
A. they have developed advanced forms of transportation.
B. they have learned how to process seawater for drinking.
C. their body temperature can vary considerably.
D. their shelter and clothing help them adapt to the environment.