求2000年1月---2011年12月四级真题打包,要有试题,答案,听力原文,听力mp3,作文范文（word版的哈）

在占地3250亩的荒山上建造森林公园.2000年春季开始植树100亩,以后每年春季都比上一年多植树50亩 直到荒山全部绿化完为止.
(1)哪一年春季才能将荒山全部绿化完?
(2)如果新植的树每亩木材量都为2立方米,树木每年的自然增长率为10%,那么到此荒山全部绿化后的那一年底,这里的木材量总共为多少立方米?
（1.1的11次方=2.85,1.1的10次方=2.59,1.1的9次方=2.36）
（1）设：X年春季才能将荒山全部绿化完
根据题意
100+（100+50）+（100+50+50）+(100+50+50+50)+……+（100+50+……+50）
=(50+50)+（50+50+50）+（50+50+50+50）+(50+50+50+50+50)+……+（50+50+50+……+50）
=50×(2+(X+1))/2 X=3250
(3+X)X=130
X^2+3X-130=0
X=10 x=-13 (不合题意,舍去)
所以10年春季才能将荒山全部绿化完
（2）
2×（10+11）/2×50×（1+10%）^10=2×2.59=14245(立方米)

In September, 1998 - January 2000 in shandong jining zhenhua engineering machinery factory as technicians and workshop director
June 2001 - March 2002 in shenzhen the plastic machinery co., LTD. Company as a mechanical engineer
April 2002 - - - - - so far in the dongguan humen fine iron co., LTD. Company as a mechanical engineer
Ability and special features:
I pay attention to the comprehensive ability training, still it is the mechanical engineering design. Once had designed the injection molding machine, ultrasonic machine, especially production electric wire electric tabled all kinds of standard and non-standard mechanical production line design. Familiar with transmission system, hydraulic system, pneumatic system, familiar with the machine and processing technology and standard component selection and use, cost and project schedule control ability. Proficient in computer aided design, including product structure of the simulation. Has a wealth of design experience and alone

10000+10000*3.25%=10325元

设本息和为x
x一10000=10000x3、25%
x=10325

好纠结的问题，看了都头疼
条件似乎并不充分，仍有一些疑点不清