问题 单项选择题

52岁男性,晨起发现右眼视力下降,无疼痛及其他症状。原发性高血压病史5年,血压控制良好,1周来视力无明显变化。眼科检查:Vod0.5,Vos1.0,右眼视盘肿胀,相对瞳孔传导阻滞,下半视野缺损。左眼杯盘比0.1,色泽正常,黄斑中心凹反光清晰。诊断为()。

A.前段缺血性视神经病变

B.视神经炎

C.视网膜中央静脉阻塞

D.视盘血管炎

E.视 * * 水肿

答案

参考答案:A

解析:

前段缺血性视神经病变(AION)可分为动脉炎性、非动脉炎性,在亚洲人中大多以非动脉炎性AION多,典型症状为单眼无痛性视力下降,患者常有高血压、糖尿病的病史。眼底检查:视 * * 水肿,局部水肿,放射状出血,以及典型的象限性视野缺损。

选择题
阅读理解

III. 阅读理解(共15小题,每小题1分,满分15分)

A

"As sure as you're alive now, Peter Rabbit, some day I will catch you," shouted Reddy Fox, as he put his black nose in the hole between the roots of the Big Hickory-tree which grows close to the Smiling Pool. "It is lucky for you that you were not one jump farther away from this hole."

Peter, safe inside that hole, didn't have a word to say, or, if he did, he didn't have breath enough to say it. It was quite true that if he had been one jump farther from that hole, Reddy Fox would have caught him. As it was, the hairs on Peter's funny white tail actually had tickled Reddy's back as Peter ran wildly through the root-bound entrance to that hole. It had been the narrowest escape Peter had had for a long, long time. You see, Reddy Fox had surprised Peter eating sweet clover (苜蓿) on the bank of the Smiling Pond, and it had been a lucky thing for Peter that that hole, dug long ago by Johnny Chuck's grandfather, had been right where it was. Also, it was a lucky thing that old Mr. Chuck had been wise enough to make the entrance between the roots of that tree in such a way that it could not be dug any larger.

Reddy Fox was too shrewd (机灵的) to waste any time trying to dig it larger. He knew there wasn't room enough for him to get between those roots. So, after trying to make Peter as uncomfortable as possible by telling him what he, Reddy, would do to him when he did catch him, Reddy walked across the Green Meadows. Peter remained where he was for a long time. When he was quite sure that it was safe to do so, he crawled out and hurried to the Old Orchard. He felt that that would be the safest place for him, because there were ever so many hiding places in the old stone wall along the edge of it.

56. Where is Peter Rabbit hiding?

A. On the bank of a pond                       B. In a hole      

C. In a tall tree                                             D. Behind a room

57. Which of the following statements is NOT TRUE according to the story?

A. Reddy Fox might find rabbit hairs on him.

B. Old Mr. Chuck took advantage of the roots to dig the hole.

C. The hole could be made larger.

D. Reddy almost caught Peter this time.

58. Why did Peter Rabbit wait so long before leaving?

A. Because Reddy was trying to get him.   

B. Because it was cold outside.

C. Because his grandfather would help him dig a large hole.

D. Because the Old Orchard was not so safe as this hole.