阻垢剂腐蚀、灼伤事故的危害？
参考答案：
1.腐蚀皮肤或灼伤眼睛；
2.严重者视力下降或失明。
依照例子，完成句子。
例: I have a pen. This is my pen.
1. He has a marker. This is __________ marker.
2. __________ has a book. This is her book.
3. __________ is a girl. __________ has six pencils.
4. He is a boy. These are __________ markers.
5. You have a chair. This is __________ chair.
半月板损伤
A．前抽屉试验阳性B．后抽屉试验阳性C．艾利斯征阳性D．侧方应力试验阳性E．麦氏征阳性
