按要求改写下列句子。

1. This is a new bus.(改成复数)

    __________________________.

2. I often have lunch at school.(改成一般疑问句)

    __________________________.

3. The Lion King is in the afternoon.(改成否定句)

    __________________________.

4. The magic show is at the Children's Palace.(就画线部分提问)

    __________________________.

5. The swimming lesson is at three in the afternoon.(就画线部分提问)

    __________________________.

大体积混凝土温控中，减少混凝土发热量的措施有( )。

A．采用干硬性贫混凝土

B．采用薄层浇筑

C．掺加高效减水剂

D．大量掺加粉煤灰

E．合理安排浇筑时间