髓外肿瘤感觉障碍的特点是（）
A.上行性感觉障碍
B.下行性感觉障碍
C.四肢末端各种感觉障碍
D.分离性感觉障碍
E.阶段性感觉障碍
参考答案：B
用be或have的正确形式填空。
1. I _____ a brother.
2. My father _____ a watch.
3. He _____ an eraser.
4. _____ you____ a soccer ball?
5. _____ she _____ a ring?
6. They _____ a computer.
7. He doesn't ____ a ruler.
8. The boys____a tennis.
9. _____ she your English teacher?
10. There____ a pen and some books on the desk.
11. Jane____many good friends.
12. Jane and Lucy _____ good friends?
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