方程10x+lg2=2000的根为x=______.
∵10x+lg2=10x•10lg2=2×10x=2000
∴x=3
故答案为:3
以下有关党的“双百”方针的说法,不准确的是 [ ]
A.提出这一方针是临时性措施
B.提出这一方针主要是调动知识分子的积极性和创造力
C.是党领导文学艺术和科研工作的基本方针
D.促进了我国文学艺术和科研事业的繁荣
It _____ me two and a half hours _____ my homework yesterday.[ ]
A. took; to do
B. takes; to do
C. spent; doing
D. cost; to do