以下肿瘤中，容易发生于皮肤的肿瘤是（）
A.淋巴瘤
B.腺癌
C.未分化癌
D.基底细胞癌
E.淋巴癌
参考答案：D
— I'll be away on a business trip. Would you mind looking after my pet cat?
— Not at all. ______. [ ]
A. I've no time
B. I'd rather not
C. I'd be happy to
D. I'd like it
催化反应系统运行需注意那些要点？
