估算钩强度的标准方法是()
A.利用铁条的直径
B.利用钩背的直径
C.与所用材料有关
D.A或B
参考答案:B
-Has your former classmate come back from America?
-Yes ,he________there for eight years.[ ]
A.has stayed
B.stays
C.stayed
D.had stayed
发生于非洲儿童的高度进展型淋巴瘤是()
A.胃黏膜相关组织淋巴瘤
B.鼻腔NK/T细胞淋巴瘤
C.Burkitt淋巴瘤
D.蕈样霉菌病
E.弥漫大B细胞淋巴瘤