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( )
A:喷石灰水
B:直接喷水
C:直接放入CO2中
D:喷水后放入CO2中
Not only Jam but also his parents _______ a few interesting places since they came to China.
读图,回答问题。
仿照下面的词语。
绿油油
____ ____ ____