根据题意得：x-3≥0，
解得：x≥3．
故答案是：x≥3．
Mo Yan has published dozens of novels, of ________ some are very popular among Chinese readers, Red Sorghum, for example.
A．those
B．whose
C．whom
D．which
人参皂苷是（）
A.甾体皂苷
B.蒽醌苷
C.强心苷
D.黄酮苷
E.三萜皂苷（果维康）
