The barrier free ramp can not be set at the edge stone of pedestrian road.( )
The barrier free ramp can not be set at the edge stone of pedestrian road.( )
The barrier free ramp can not be set at the edge stone of pedestrian road.( ) A: 正确 B: 错误
The barrier free ramp can not be set at the edge stone of pedestrian road.( ) A: 正确 B: 错误
Most governments at least try to make it difficult for people to cross their borders illegally. This barrier to the free movement of labor is an example of racial discrimination. ( )
Most governments at least try to make it difficult for people to cross their borders illegally. This barrier to the free movement of labor is an example of racial discrimination. ( )
blood-air barrier
blood-air barrier
blood-testis barrier
blood-testis barrier
Nowadays, less than 5% of Chinese English learners possess barrier-free communication skills in English. _________________
Nowadays, less than 5% of Chinese English learners possess barrier-free communication skills in English. _________________
gastric mucosal barrier
gastric mucosal barrier
堡礁（barrier reef）
堡礁（barrier reef）
Placenta barrier (placenta membrane)
Placenta barrier (placenta membrane)
The Great Barrier Reef is huge and it’s clearly
The Great Barrier Reef is huge and it’s clearly