某上市公司发行股票5000万股，总资产80000万元，经营性现金净流量为7500万元，营业收入为18000万元（增值税税率17％）。

该公司的销售现金比率是（）。

A.0.42

B.0.36

C.0.28

D.0.24

句子改写。

请按要求变换句型，每空一词。

1. My hair is black.(就划线部分提问).

    __________ __________ is your hair?

2. He looks young.(就划线部分提问)

    __________ __________ he look like?

3. She has two short arms.(改为否定句)

    She __________ __________ two short arms.

4. We are from Cuba. (改为一般疑问句)

    __________ __________ from Cuba?

5. His father is fine.(就划线部分提问)

    __________ __________ his father?