Physical exercise is also important for your memory, because it increases your heart (4)______ and sends

Physical exercise is also important for your memory, because it increases your heart (4)______ and sends more oxygen to your brain, and that makes your memory work better. 

A. degree    

B. level        
C. rate                    
D. grade

Trả lời

Heart rate: nhịp đập của tim

Chọn C

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