The brain is totally dependent on the oxygen______by its blood supply, and brain cells will die if deprived of oxygen for more t

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问题 The brain is totally dependent on the oxygen______by its blood supply, and brain cells will die if deprived of oxygen for more than a few minutes.

选项 A、produced
B、picked
C、conducted
D、conveyed

答案D

解析本题考查动词的含义。A生产，产出；B挑选，采摘；C引导，管理；D传送，运输。该句的大意为：大脑完全依赖于血液供给中输送的氧气，如果缺氧超过几分钟，脑细胞就会死亡。

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