A：中央集权得到进一步加强
B：地方政府进一步收回财权
C：政治和理学思想紧密结合
D：藩镇割据成为严重的社会问题
在初中即将毕业之际, 请你以张明的名义给英国笔友Brian写一封感谢信, 要点提示如下：
three years ago
a new comer, have no friends and feel lonely…..
During three years
Brain have written many letters to help you in different ways:
Encourage you to make more friends.
Tell you the ways how to learn English well
…….
You have changed a lot, for example, ……..
invite him to come to Hangzhou to pay a visit…….
要求：
①词数：80--100个
②信的开头和结尾已给出, 不计入总词数
③要点齐全, 行文连贯, 可适当发挥
Dear Brian,
How time flies! We have been friends for three years. I'm writing to thank you for your help!
Three years ago, ……
Hope to see you soon!
Yours,
Zhang Ming
在一列数x1,x2,...中，已知x1=1，且当k≥2时，xk=xk-1+1-4k-14-k-24，其中，a表示不超过实数a的最大整数（如2.6=2,0.2=0）则x2011=（ ）
传说中的炎帝和黄帝是中华民族的人文始祖。下列有关黄帝的叙述不正确的是（ ）
