眼球后血肿可引起（）.
A.眼睑淤血
B.眼球突出
C.球结膜下出血
D.眼球运动障碍
E.眼球搏动
参考答案：A, B, C, D
If you want to ______ happiness, you should first divide it and then share it with others. [ ]
A. seek
B. replace
C. perform
D. multiply
以下哪项是固定桥最重要的支持基础
A．牙周膜
B．牙槽骨
C．牙龈
D．结合上皮
E．黏膜
