既可通过输血感染,又可通过性接触传染的病毒()
A.甲型肝炎病毒
B.乙型肝炎病毒
C.丙型肝炎病毒
D.HIV
E.梅毒
参考答案:B, C, D, E
关于杀虫农药中毒
敌稗、除草佳等中毒的特效解毒剂为
A.亚甲蓝 B.联砒啶类 C.烟酰胺 D.有机磷类农药 E.氨基甲酸酯类
Scientists say Vitamin D may be an effective way to _____ cancer but many people worldwide do not get
enough of it. [ ]
A. contribute to
B. set aside
C. guard against
D. hold on to