爱护植被，绿化祖国。我国每年的3月12日，是全国的“____”。

完形填空
    My mother is a doctor.She is unable to get back home 1 every day.And she has to work on weekends sometimes.So it's hard for her to do all the 2 after work.
    As a member of the family，I think it's my duty to 3 some housework.4Mom always says she doesn't need any help，there are always things I can do.5 ， I can help do the dishes and set the table.I'm sure Mom loves me 6 to help her.
    What's more，I'm trying to be 7.I wash my own clothes，tidy up my bedroom and take care 8 my things.I'm old enough to do these things.And I can't9 on my parents forever.
    Always show your 10 to your mom for everything she does.I believe she will feel sweet.Try it now.

She's my ____ .   

下面这句话读音停顿正确的一项是(    )。

引起生物可遗传变异的原因有三个，即基因重组、基因突变和染色体变异。以下几种生物性状的产生，来源于同一种变异类型的是                     
①蝇的白眼                        ②豌豆的黄色皱粒、绿色圆粒  
③八倍体小黑麦的出现              ④人类的色盲  
⑤玉米的高茎皱形                  ⑥人类的镰刀型细胞贫血症