非法从事出版物的出版、印刷、复制、发行业务，严重乱市场秩序，情节特别严重，构成犯罪的，可以非法经营罪定罪处罚。（)
参考答案：对
---He seems to be a teacher.
---______. He has been a teacher for 20 years.
A．So he does
B．So he is
C．So does he
D．So is he
良性与恶性肿瘤的鉴别项目中，不正确的是
A．分化程度B．生长速度C．转移否D．生长方式E．肿瘤大小
