Which of the following words is formed through derivation
A. Foolish.
B. Clockwise.
C. Babysit.
D. Earthwar
NBAC will leave the issue of embryo research undiscussed because ______.
A. embryo research is just a current development of cloning
B. the health of the child is not the main concern of embryo research
C. an embryo's life will not be endangered in embryo research
D. the issue is explicitly stated and settled in the law
下列不是物业管理档案分类方法的是( )。
A. 年度分类法
B. 组织机构分类法
C. 内容分类法
D. 事件分类法
( )是指物业管理企业利用物业产权人、使用人提供的商业用房，从事经营活动取得的收入。
A. 材料物资销售收入
B. 废品回收收入
C. 商业用房经营收入
D. 无形资产转让收入
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