题目内容

神经细胞绝对不应期中,钠通道处于()。

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确定肿瘤良恶性的依据是肿瘤的()。

阿托品抗休克的主要机制是()。

A.determinedB.has determinedC.was determinedD.had been determined

A. determined
B. has determined
C. was determined
D. had been determined

From the third paragraph, we learn that the youth ________.

A. tend to mourn the pop stars who died of overdose as role modes B. are shocked to know even pop stars may abuse drugs C. try to face the deadly effect of drug use D. may stop abusing drugs

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