下列动物中,属于撒哈拉以南的非洲热带草原特有的动物是( )
A:①
B:②
C:③
D:④
How does your new house____ ____your old house?
- I'd like to know ______ to the school-leavers' party?
- A dress, I think.
保持二氧化碳化学性质的粒子是( )