题目

— Jack speaks ________English like a native. I always admire him. — Now he is learning ________more difficult language—Arabic. A. an; a  B. /; the  C. /; a  D. the; a 答案:C正常人空腹时,100mL血液中含葡萄糖约80~110mg.甲、乙两人分别口服100g葡萄糖液之后,连续测其血糖浓度的变化如图.据图判断,下列叙述中最合理的是(  ) A、甲的肝脏正常,调节血糖浓度的反应较快B、乙的胰脏异常,调节血糖浓度的反应较慢C、甲的胰脏正常,能快速吸收葡萄糖而使血糖浓度升高D、乙的胰脏正常,能快速促进血糖浓度降回正常范围,而有调节血糖浓度的功能
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