阅读下列短文，从每趣所给的四个选项(A, B, C, D)中，选出最佳选项，井在答
题卡上将该项涂黑．
A
Have you ever noticed that some people am able to effortlessly remember even the most boring details, and quickly understand new things, and wished that you too could be like that? To unlock the full potential of you brain. you need m keep it active and acute. But how? Check out these tips:
．Exercise＆get your body moving
Exercising doesn't just exercise the body; it also helps to exercise your brain. Without regular exercise your blood vessels《血管）begin m lose the ability to effectively pump blood and it also mduws the amount of oxygen and nutrients（养分）thatyour blood carries to your brain. When the nutrients don't make it them, the brains ability
