问题 单项选择题

患者,女性,43岁,因右侧颅内神经胶质瘤接受放疗后出现右眼红,角膜旁中央下方见片状角膜上皮缺损,荧光素染色阳性,诊断为神经麻痹性角膜溃疡,正确的处理措施是()

A.行激光角膜治疗性切削术,形成光滑创面,促进愈合

B.进行治疗性板层角膜移植

C.进行角膜缘移植

D.戴用软性接触镜促进角膜缺损灶的愈合

E.该病具有自限性,停止放疗后可自愈,因此不需要特殊治疗

答案

参考答案:D

解析:神经麻痹性角膜炎为三叉神经遭受外伤、手术、炎症或肿瘤等破坏时,失去神经支配的角膜敏感性下降以及营养障碍,对外界有害因素的防御能力减弱,因而角膜上皮出现干燥及易受机械性损伤。治疗措施包括使用不含防腐剂的人工泪液和眼膏保持眼表湿润,用抗生素眼药水及眼膏等预防感染,羊膜遮盖、戴用软性接触镜或包扎患眼等促进角膜缺损灶的愈合。药物治疗无效可行睑缘缝合术或用肉毒杆菌毒素A造成暂时性上睑下垂保护角膜,减少泪液蒸发,防止眼表干燥。因此本题的正确答案为D。

问答题 简答题
阅读理解

Forest guards in western India are using cell phones with ringtones of cows mooing, goats bleating and roosters crowing to attract leopards that have wandered into human settlements, officials said on Monday.

The wild cats in the state of Gujarat often get into villages near forests in search of food, say officials, adding that this results in attacks on people. But rather than use methods such as live bait(诱惑物) like goats tied to trees to lure the leopards, which then fall into large pits dug by guards, officials say they have found a safer method to trap the cats.

“The moos of a cow, bleating of a goat from the phone has proved effective to trap leopards,” said D. Vasani, a senior forest official in Gujarat. “This trick works.” Vasani said forest guards have downloaded the sounds of over a dozen animals as ringtones on their mobiles which they attach to speakers and fix behind a cage. They then play the ringtone continuously for up to two hours until the curious leopard appears and moves into the cage looking for its easy meal.

At least five leopards have so far been lured from villages since the new ringtone method was introduced three months ago. The cats have all been released back into forest areas.

Wildlife activists welcomed the new initiative saying that previous methods of trapping the cats using pits often resulted in the animals getting injured.

小题1:What can be the best title of the passage?

A.Cell Phones to Hunt Animals

B.Practical Uses of Cell Phones

C.Wildlife and New Technology

D.Phone Ringtones to Catch Leopards小题2:Forest guards in India try to catch leopards mainly because ______.

A.leopards attack villagers

B.they want leopard fur

C.leopards attack animals

D.they have new ringtones小题3:What will be needed to trap the leopards using the new method?

① cell phones   ②animals    ③ sounds of animals   ④ cages    ⑤large pits

A.①②③④

B.①③④

C.①④⑤

D.②③⑤