文献记载:“钢铁是杂炼生(生铁)鍒(熟铁)作刀镰者。”此文献提到的金属冶炼技术发明于[ ]
A.春秋战国时期
B.两汉时期
C.魏晋南北朝时期
D.隋唐时期
答案:C
1岁男孩,因腹泻呕吐2日住院。唇樱红色,口腔黏膜干燥,眼窝下陷,眼睑不能闭合,两肺无异常,舟状腹,皮肤弹性差,小便少。测T36℃,心率140次/33,律齐,有力。呼吸深而速,35次/分,临床诊断为:急性婴儿腹泻。
该患儿已丢失体液量为()。
A.400ml
B.500ml
C.600ml
D.700ml
E.800ml
— I haven't got the reference book yet, but I'll have a test next month.
— Don't worry. You ________ have it by the end of this month. [ ]
A. will
B. shall
C. can
D. may