句型转换。

1. Lily brushes her teeth after three meals. (变为一般疑问句)

    _____________ Lily ____________ her teeth after meals?

2. Jim can play the piano well. (变为否定句)

    Jim _____________ _____________ the piano well.

3. I like Liu Xiang because he is the best runner. (就划线部分提问)

    ______________ _____________ you like Liu Xiang?

4. Bob likes thrillers. Bob likes Beijing Opera. (将两句子合为一句)

    Bob likes thrillers ______________ _____________ likes Beijing Opera.

5. Does Lucy have a tennis ball? (作出否定回答)

    _____________, _____________ _____________.

6. I think the story is boring. (改写句子，句意不变)

    I _____________ _____________ the story is _____________.

投资收益率是一个静态财务评价指标，尤其适用于()的工程建设方案选择和投资经济效果评价。

A.投资经济效果比较明确

B.工艺简单而生产情况变化不大

C.政府投资项目

D.先开工后进行可行性研究