脊柱姿势性侧凸的常见原因不包括()
A.儿童期坐姿经常不正
B.一侧下肢较另一侧短
C.先天性脊柱发育不良
D.脊髓灰质炎后遗症
E.坐骨神经痛
参考答案:C
用所给单词的适当形式填空。
1.一____you____(go)to Visit the Great Wall?
一Yes.I did.
2.The people there were____ (friend).
3.What____ (activity)did you have last term?
4.Don't go outside. It____(rain)now.
5.Let's____ (discuss)the answer to the question.
由胚根直接生长形成的根,称为()。
A.主根
B.侧根
C.须根
D.支根