A:put off
B:put on
C:put up
D:put dow
简答《权利法案》的主要内容。
有X、Y、Z三种金属,将X、Y浸入稀盐酸中,Y表面有气泡、X无明显现象;将X浸入Z的硫酸盐溶液中,X的表面附着Z金属,则三种金属活动性由强到弱的顺序为( )
— Were there any cows?
— ________.