题干

随着工业化、城镇化快速推进和农村劳动力大量转移,农村土地流转速度加快,上海松江区2007年起开始实践百亩左右规模的家庭农场模式。首批家庭农场主沈忠良经营着146亩承包田,2012年,全年种植净收入12.4万元,农机服务净收入3.1万元,家庭年总净收入15.5万元。这说明家庭农场
①劳动成果直接归劳动者所有和支配
②由劳动者家庭占有生产资料,从事个体经营
③是发展土地适度规模经营的有效途径
④有助于提高农业的整体效益,增加农民收入

A:①②

B:①③

C:②④

D:③④

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答案(点此获取答案解析)

D

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    You might make a disgusted face when you notice that the person waiting in their car at the red light next to you is picking their nose,but admit it,you do it too.And while it might be the natural option when there isn't a box of tissues around,it can be bad for you.The main reasons people feel the need to pick their nose is to clear it of dried liquid,stop an itch(痒),or just because it feels good.Boogers(鼻屎)form when dried liquid and cilia,the tiny hairs that line the nostrils(鼻孔),trap the dust,dirt,and other things.When boogers build up in your nose,it can be uncomfortable,and sometimes just blowing into a tissue doesn't do the trick.

    Otolaryngologist Erich P.Voigt, MD ,told Business Insider that picking your nose can cause injuries and bleeding within your nostrils.That's not terribly damaging,but when the bacteria from your hands get into your body,it can cause a cold and flu.So doctors strongly suggest not picking the nose.

    If dry winter air is causing the dirty liquid to harden in your nostrils,making you want to pick,consider damping the air at home,or taking a steam shower to soften things up in there.

    Children, who are most famous for having a finger up their nose,sometimes don't realize how much injury they're causing,and sometimes it.can lead to nose bleeds.

    So, next time you go to pick your nose,think about how many bacteria are on your hands and in your boogers, and maybe reach for a tissue instead.Even if you 're alone,and not waiting for the light to turn green,please,use a tissue.