—Tomas Edison always ________ too late, because he thought sleeping at night is to waste time.

—Oh. He was really a strange man.[ ]

A. put up            

B. stayed up

C. woke up            

D. got up

下列哪项工程被联合国环境规划署授予“全球500佳”之一称号（）

A.退耕还林还草工程

B.湿地生态恢复工程

C.“三北防护林”生态工程

D.城市环境生态工程