图甲所示弹簧测力计测出物体所受的重力为____  N．图乙表示一根弹簧在弹性限度内伸长的长度△l与所受拉力F之间的关系，由此图可以查出当这根弹簧伸长2cm时，所受拉力为____ N．

与吉利收购沃尔沃的结果相反,美国通用汽车公司2011年2月25日宣布：四川腾中重工业机械有限公司未能完成收购悍马。据美国媒体报道，收购失败的原因主要是出于资源节约和环境保护的需要，中国政府监管部门拒绝了腾中重工收购通用悍马品牌的请求。如果此报道属实，对此的正确认识是                                   
①中国政府坚持“引进来”与“走出去”相结合的战略
②市场在资源配置中发挥基础性作用
③市场的弱点和缺陷需要政府加强宏观调控
④中国政府坚持科学发展观，促进国民经济又好又决发展

人在运动时只有运动系统活动加强吗？体会一下还有哪些器官和系统参与？这说明了什么？

根据短文理解，回答下列各题。

      CCTV reported that every year Chinese people throw away a lot of food; it can feed 200 million people for a year.

      Do we have too much food? Of course not. According to the UN World Food Program, there were 925 million hungry people around the world in 2010. Six million children die of hunger every year.

      Luckily, a number of people have realized the importance of saving food. Last November, Li Hong, a waitress in a restaurant in Nanjing, lost her job because she took some leftover(剩余的)food home for her son. Many people are by her side and criticized(批评)the waste behavior.

      What should we do in our daily life to waste less food? Here are some tips:

       ①Don't order too much food in a restaurant. Only order as much as you want to eat. If you cannot eat all the food you order, take the rest of it home.

       ②Don't be too picky(挑剔的)about food. Some food may not taste great, but your body needs it.

       ③Don't keep too much food at home, especially vegetables and fruit.

     “Every grain on the plate comes from hard work(谁知盘中餐, 粒粒皆辛苦).” It tells us everybody must save food.

唐高祖退位后，传给（   ），他就是唐太宗，年号（   ）。