破坏红细胞的主要血管外场所是()
A.肝
B.肾
C.脾
D.淋巴结
E.胸腺和骨髓
参考答案:C
I thought Jim would say something about his school report, but he ______ it.
A.doesn’t mention
B.hadn’t mentioned
C.didn’t mention
D.hasn’t mentioned
慢性毒性试验一般依亚慢性毒性试验的LOCEL来确定,以其1/100为哪个剂量组()
A.高剂量组
B.中剂量组
C.低剂量组
D.对照组
E.溶剂对照组