在我国经济的大舞台上，扮演主角的是公有制经济。下列关于公有制经济的说法正确的是 （    ）
①公有制经济主要包括国有经济、集体经济、                    ②公有制是我国社会主义经济制度的基础，是国民经济的主体
③现阶段，我国要毫不动摇地巩固和发展公有制经济        ④公有制经济是实现人民共同富裕的保障

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    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.

中纬度地区沿海地区降水多于内陆地区的主要影响因素是（   ）

中国地域辽阔，各地区气候差异显著。结合下图中的气候资料，回答下列问题。

-- Would you like to play football after school?  

-- ________. I have a lot of homework to do.