某男，34岁，腹胀半个月，伴消瘦、乏力、食欲减退。查体：体温36．1℃，神志不清，营养不良，巩膜无黄染，心肺无异常，腹部膨隆，肝脾触诊不满意，移动性浊音（+），检查血清转氨酶正常，血清总蛋白58g／L，A／G＝1．7／4．1，钡餐见食管中下段呈虫蚀样充盈缺损，腹水化验为漏出液，AFP阴性。

Jim: I’ve had a lot of trouble getting through to you. Your call centre wouldn’t put me through. Clerk: I’m sorry. We’ve been very busy this morning. Please explain the problem, and I’ll see what I can do. 20. From the conversation above, we know Jim has the problem about________.A．thephoneB．callingC．center

A. 肿瘤大小
B. 肿瘤边界
C. 肿瘤密度是否均匀
D. 瘤内有无脂肪
E. 肿瘤有无强化