挫伤常由下列哪一种情况引起?()
A.利器切割
B.钝物撞击
C.持续劳损
D.肌肉强烈收缩
E.关节过度扭转
参考答案:B
根据句意及首字母或汉语提示完成单词。
1. Mary c______ her room every morning.
2. Jack, some one is w______ for you outside the door.
3. Do you have a c______? I want to take some photos.
4. The sun goes up in the east and goes down in the ______(西方).
5. There are lots of ______(鸟) in the tree.
EFP方式的特点:()、()。