如图为花的结构示意图，请确定未知结构名称并回答下列相关问题：

（1）A是指______，B是指______．

（2）胚珠发育成______．

（3）如果仅从如图花的结构分析，在鲜花店工作的你，最关注的应是______（花柱或花瓣）；作为养蜂专业户的你，最关注的是______（花药或胚珠）．

句型转换。

1. How about the weather? (改为同义句)

    _____ the weather?

2. I thought he would go to college the next year, _____? (完成反意疑问句)

3. I really don't know what I should do about it. (改为同义句)

    I really don't know_____about it.

4. Stop talking in the reading room, _____? (完成反意疑问句)