《国家中长期人才发展规划纲要(2010——2020年)》近日正式出台。今后，人才将被放在发展的最优先位置，将对我国改革开放和现代化建设产生深远而持久的影响。强调人才重要性的哲学依据是( )
①人是社会实践的主体，是改造世界的主要力量
②改造自然和社会的活动是通过人的实践活动实现的
③实践为人类所特有，是改造自然界的一切活动
④认识世界和改造世界都离不开人的主观能动性

Cooking and Learning
In this E-book package, we have four e-books.

Fun with Food This fun e-book is filled with exercises --- photo tests, word exams, riddle games coloring pages and exercises on learning more about food.	Kids Food Science Experiments Learn more about science and cooking with these food science experiments and instructions for kids.
Food Facts E-Book To go with the kids cooking lessons e-book, we've put our food facts into one e-book. Each part is easy to print off. You can keep it in the kitchen and teach kids facts about the food we eat. The Food Facts E-Book has over 60 pages.	Kids Cooking Lessons E-Book We've brought all our kids cooking lessons together into one easy e-book. We have a unit for each age group. This e-book is just planned to help you with cooking experience in the kitchen. If you'd like our lessons in e-book form with some learning exercises and other things, then this e-book is for you.

我国在人口方面的基本国策是(   )

下列属于最简二次根式的是（　　）

“独学而无友，则孤陋而寡闻。”这句话说明（   ）