15减去13与0.5的和,用所得的差去除1.8,商是( )
A: 1.2
B:12.2
C:0.2
D:2.1
They have taught me to work hard.
____的城市 ____的垫子 ____的地方
____的空气 ____的老人 ____的河道、
The Greens ____ (plan) to go on holiday in Hawaii at present.
① 58 ②0.62③62.1%④ 23 .