在下图所示的现象中,不能说明大气压存在的是[ ]
A.
B.
C.
D.
答案:D
The radio was too noisy. Would you turn ___ __ a little, please?
A.down it
B.it down
C.it off
D.off it
由花托、花萼或花冠等与子房一起发育而成的果实称为假果。