题型:选择题 - How are the things in your village? - Modern farming methods have been brought in and the villagers are ________ now than before. [ ]A. well offB. better offC. badly offD. worse off 查看答案
题型:单项选择题 共用题干题 男性,18岁,近1个月来头昏乏力明显,周身酸痛,四肢皮肤散在淤斑,血红蛋白由110g/L降至60g/L,白细胞1.0×109/L,中性粒细胞占25%,淋巴细胞占75%,血小板15×109/L。为明确诊断,下列哪项检查是不必要的()A.网织红细胞计数B.骨髓穿刺术C.Ham试验D.骨髓活检术E.血红蛋白电泳 查看答案