根据上下文及首字母完成下列对话。

A: What's the best g __1__ Sarah has ever received?

B: An MP3.

A: When did she g __2__  it?

B: On her 14th b __3__ .

A: W __4__  gave it to her?

B: Her aunt.

A: What a lucky girl!

B: Why not b __5__  it from her to listen to some music?

A: She can't lend it to us b __6__  it's broken.

B: Why doesn't she have it repaired?

A: She thinks it's too expensive.

B: What about Uncle Wang? He is g __7__ at repairing something and I think he won't charge her much

    money.

A: It's a good i __8__. Let's go to tell Sarah about it.

某建筑工程按扩大单价法编制单位：工程概算，由于设计深度的原因，其零星工程如散水、台阶等无设计尺寸。对此部分工程可以按( )计算。

A．预算定额中划分的项目

B．概算定额中划分的项目

C．主要工程费用的百分率

D．主要材料消耗量的百分比