政府门户网站建设不仅仅是一项单纯的技术工作。
参考答案：对
淋巴管瘤（）。
A.上皮组织肿瘤
B.间叶组织肿瘤
C.淋巴造血组织肿瘤
D.神经组织肿瘤
E.其他肿瘤
You can't find the farmer here. He ___ at the foot of the hill. [ ]
A. worked
B. is working
C. was working
D. works
