器官移植的成功是人类医学的伟大成果，因为移植到人体内的器官很

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问题选择题

器官移植的成功是人类医学的伟大成果，因为移植到人体内的器官很不易成活。根据现代免疫学的概念，植入器官的组织细胞相当于 [ ]

A．肿瘤细胞

B．损伤细胞

C．抗体

D．抗原

答案

答案：D

选择题

—How is he getting on with his spoken English?

—Great. Now he can speak English ______ his English teacher. [ ]

A. as better as

B. as well as

C. as good as

D. as many as

判断题

王某是A公司业务员，持公司一份盖了章的空白合同书，同B公司签订了购买B公司货物的合同，A公司拒绝承认。王某的行为是表见代理。( )