题目

下面关于血液各种成分的叙述中，错误的是（） A . 血浆能运载血细胞 B . 血小板能吞噬细菌 C . 白细胞有细胞核 D . 红细胞能运输氧 答案：BTom is fat. The doctor asks him to ________ and ________.A. eat more, exercise moreB. eat less, exercise lessC. eat less, exercise moreD. eat more, exercise less