胆总管囊肿需与下列疾病相鉴别（）
A.慢性肝炎
B.肝包虫囊肿
C.肝母细胞瘤
D.肾母细胞瘤
E.神经母细胞瘤
参考答案：A, B, C, D, E
—_______ do you usually do your homework?
—I usually do my homework in the evening. [ ]
A. What
B. When
C. Where
属于人类退化器官的是（）
A.丝状 * *
B.叶状 * *
C.菌状 * *
D.轮廓 * *
E.C和D
