项目投资利税率是项目达到设计生产能力后一个正常生产年份的利税或项目生产期内平均利税总额与（）的比率。

A.总利润

B.总投资

C.总产出

D.总费

句型转换。

1．We started music class at 7:30 today.(对画线部分提问)

    __________ __________ you ___________music class today?

2. She has been doing homework since an hour ago．(对画线部分提问)

__________ __________ __________she__________ __________homework?

3. He began to listen to BBC English half an hour ago.(改为同义句)

    He__________ __________ __________ __________ BBC English__________ __________ __________ __________．

4.I began to learn English at the age of five.(改为同义句)

    I began to learn English__________ __________ __________ __________．

5.I went to the party, too.(改为否定句)

    I__________ __________ __________ __________the party,__________．