永定河流经的省份有()
A.北京
B.天津
C.河北
D.山西
E.内蒙古
参考答案:A, B, C
根据汉语意思,完成句子。
1. 我想给家里写信.
I want to ___ ___.
2. 你什么时候到家?
When do you ___ ___?
3. 该吃晚饭了.
It is time to ___ ___.
4. He can spell his name. (改为一般疑问句,并做否定回答)
___ he ___ his name? ___, he ___.
5. I want to take some books to the classroom. (改为否定句)
I ___ want to take ___ books to the classroom.
全口义齿的固位与哪个因素关系最小()
A.咬合力
B.内聚力
C.附着力
D.表面张力
E.大气压力