We are busy ______ our lessons these days.
A. prepare
B. preparing
C. to prepare
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This room is ours, and that one is ______.
A. them
B. their
C. theirs
The woman's daughter is ______.
A. four years old
B. eight years old
C. nine years old
某公司的财务杠杆系数为1.25,经营杠杆系数为1.6,则该公司的销售额每增长10%就会造成每股收益增长( )。
A. 18.5%
B. 16%
C. 20%
D. 3.5%
B企业为取得一新技术,现准备委托外部科研机构研发并购买,或者聘请专家到企业搞研发,假设外聘专家研发时整个项目估计120万元,那么仅从所得税及项目经费角度考虑,企业委托外部科研机构研发的整个费用不得超过( )万元。假设所得税率为25%。
A. 105
B. 90
C. 100
D. 140