If you don't take more ________, you'll get fat.
A.medicine
B.lessons
C.photos
D.Exercise
答案:D
(1)发生爆炸 (2)煤气泄漏 (3)建筑施工 (4)医院急救 (5)交通中断( )
A.3-5-4-2-1
B.5-2-1-4-3
C.5-3-1-4-2
D.3-2-1-5-4
停车场标志有哪些?