用窥耳镜看鼓膜时，窥耳器不应超越外耳道的外（），才便于上下左右移动，以观察鼓膜全貌；同时也可避免因置入过深压迫骨部，引起疼痛和咳嗽。
A、1/2B
暂无解析
A number of companies use nontraditional benefits and perks to help employees cope with stress.
题目：抱怨和索赔信函
How to Deal with a Heavy Workload
While I was waiting for her ,I killed time____looking in the show windows.
While only about 300 workers receive disablement benefit for industrial dermatitis every year, there may be between 15,000 and 60,000 new cases of this condition every year.
