卵巢浆液性 * * 状囊腺瘤，伴非典型增生是（）
A.癌前病变
B.交界性肿瘤
C.癌肉瘤
D.原位癌
E.非肿瘤性病变
参考答案：B
用所给单词的适当形式填空
1. Trees must __________(prevent) from being cut down.
2. They __________(plant) ten thousand trees by last spring.
3. The sheep __________(tie) to the tree has eaten a lot of grass.
4. I can easily hear combs __________(go) through hair.
5. Great changes __________(take) in our hometown in the last ten years.
最早的外科医师称为（）
A.疾医
B.疡医
C.食医
D.兽医
E.大方脉
