白血病是由哪个国家的病理学家维尔柯夫在1846年首次发现的（）
A、德国
B、美国
C、中国
参考答案：A
项目投资中的原始总投资是指( )。
A．经营成本和各项税款
B．经营成本和流动资金投资
C．建设投资与流动资金投资
D．建设投资与经营成本
(one two three four five) (marker markers) ______________________
(one two three four five) (book books) ______________________
(one two three four five) (chair chairs) ______________________
(one two three four five) (desk desks) ______________________
(one two three four five) (girl girls) ______________________
(one two three four five) (pencil pencils) ______________________