Little Mermaid (美人鱼) ________ to Shanghai and visitors can see it there now.
A:has moved
B:has been moved
C:will move
D:was moved
众多的河湖为黄石地区提供了水运、养殖、灌溉之便.下列关于黄石地区河湖的叙述正确的是( )
取四朵用石蕊试剂染成紫色的干燥纸花进行如下操作,能够观察到纸花变红的是( )