已知点M(1-a,a+2)在第二象限,则a的取值范围是______.
∵点M(1-a,a+2)在第二象限,
∴1-a<0a+2>0,
解得:a>1.故填:a>1.
阅读下列材料,完成下列问题。
材料一 对于努力耕作者免其徭役,对于怠于种田或因从事手工业、贾贩活动而致贫者罚为奴隶。 ——《商鞅变法》
材料二 “重农抑商”政策是否阻碍了经济的发展?从短期看,应该如此。由于重农抑商,资本积累速度会放慢。但是,从长期看,则恰好相反。资本积累周期越长,积累规模将变得更加巨大。经济史料支持这种逻辑分析。清朝时期,广东怡和行商的伍秉槛拥有资本达2 600万两白银,约为清政府年财政收入的一半左右。当今欧美各国也没有哪一位大资本家能够拥有如此比例的巨额财产。伍秉槛的财富并非鹤立鸡群,同期的一位宁波商人拥有2 000万两白银,晋商、徽商拥资千万两白银的亦不鲜见,至于拥有百万两白银者则不计其数了。 ——引自《重新认识中国历史》
(1)材料一体现了我国古代的什么经济政策?
________________________________________________________________________________
(2)材料二反映了什么历史现象,为什么会出现这种现象?
(3)评价“重农抑商”政策。
The problem is my weight. I’m just 1.57 meters high, but51. ______ my weight is 75 kilos. Many students often make a fun 52. ______ of me. Some boys were unfriendly for me—they call 53. ______ me "meat ball". That makes me to feel unhappy. 54. ______ Although I’m a bit too fat, yet I feel very well. I 55. ______ enjoy my meal. I love eating meat very much. And I like 56. ______ sweet food, though. I often have sugar with tea, milk. In57. ______ the past two months I had put on 5 kilos. So I’m becoming58. ______ more and more worried this problem, but I don’t 59. ______ know to lose weight quickly. Could you help me, dear doctor. 60. ______