国外建设工程项目设计阶段投资估算的误差率范围为( )左右。
A.±5%
B.±10%
C.±20%
D.±30%
参考答案:A
(2013·湖南,35)Not once________to Michael that he could one day become a top student in his class.
A.occurred it
B.it did occur
C.it occurred
D.did it occur
作文
请以“坚守的价值”为题,写一篇不少于800字的文章。要求:1.立意自定,2.角度自选,3.除诗歌外,文体不限。