撒哈拉以南的非洲,在这片神奇而又充满生机的土地上,没有( )
A:大规模迁移的动物
B:茂密的森林
C:辽阔的草原
D:充足的粮食
Many people are building the factory in the city because it' not good for the environment.
9-5+8=____
8-1+9=____
10-8+6=____