A. it is considered ethically wrong B. it may bring diseases into human bodies C. it brings parasites into human bodies D. it does more harm than good to humans 参考答案:B
第32题: [单项选择]再生障碍危象早期骨髓检查的特征是( ) A. 有核细胞减少 B. 看不到原、早幼红细胞 C. 只看到中、晚幼红细胞 D. 数日后发现巨大原始红细胞 E. 以上都是 参考答案:D