关于产业活动的区位条件的叙述，正确的是(　　)

 阅读理解。根据短文，判断正误。

      There are two picturesabout our city. One is now. the other one is before(以前的). Look! There was a small park, but now there is a big and beautiful park. And there is a lake with some ducks on it. There wasn't a lake before. In our city there were some old houses, small trees. But now there are some new and high buildings（建筑物）. The trees are very tall and the flowers are very beautiful. There are some supermarkets and some cars now. I love my city. Do you want to visit here?

对于问题:从一批冰箱中抽取100台,调查冰箱的使用寿命.

 该问题的总体是:____；个体是:____；

 样本是:____；样本容量是:____.

小微企业是发展的生力军、就业的主渠道、创新的重要源泉。2015年8月19日，国务院总理***主持召开国务院会议，决定进一步加大对小微企业的税收优惠，涵养就业潜力和经济发展持久耐力。下列说法正确的是（    ）

①发展小微企业能拓宽就业渠道，有利于实现共同富裕   ②小微企业已成为我国经济的主体，在经济舞台上唱主角

③我国鼓励、支持和引导非公有制经济的发展                   ④扶持小嫩企业发展，对推动创新和促进我国经济发展具有重要意义