单项选择题

The organization of brain is characterized by __________.

A．the interior of the skull
B．different regions responsible for different functions
C．the outer layer—the cerebral cortex
D．the nerve cells densely packed

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热门试题

单项选择题

The Great Transformation is caused by __________.

A．artificial intelligence and genetic engineering
B．the shortage of natural resources
C．the development of practical science
D．unknown reasons

单项选择题

The more chemicals we send into the air, the less land we will possibly have because __________.

A．chemicals will wash away fields
B．water levels will go up
C．more and more land will be covered by ice
D．none of the above