疟色素的产生来自
A.人疟原虫细胞核B.疟原虫细胞质C.红细胞膜D.患者血清E.红细胞中的血红蛋白
参考答案:E
解析:疟色素是疟原虫的代谢产物,是其消化红细胞后的残留物。
Her mother didn't ask him to do it, but she didn't ask him not to do it, ____. [ ]
A. too
B. also
C. either
D. as well
用收益法估算某大型商场的价值时,其净收益为商场销售收入扣除商品销售成本、经营费用、销售税金及附加、管理费用、财务费用后的余额。 ( )