当初步设计达到一定深度，建筑结构比较明确时，可采用( )编制建筑工程概算。

A．扩大单价法

B．概算指标法

C．价值百分比法

D．预算单价法

根据所给的汉语提示，转换下列句型。

1. I am looking forward to going to senior high school．（对画线部分提问）

              are you looking forward to_  ___?

2. I am very happy that I am no longer bottom of the class. （改为同意句）

    I am very happy that I am not bottom of the class____ ____.

3. I used to have problems writing and speaking English.（改为否定句）

    I____ ____ have problems writing and speaking English.

4. I don't think king cobra is more dangerous than golden poison dart fog. （改为同意句）

    I think king cobra is____dangerous____golden poison dart frog.

5. Many scientists think that the most dangerous is mosquito among the world's animal.（改为同意句）

    Many scientists think that mosquito is          dangerous__   __the other animals in the world.