湿性老年黄斑变性和干性老年黄斑变性的区别是（） A.有无视网膜_爱下问搜题

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问题单项选择题 A1型题

湿性老年黄斑变性和干性老年黄斑变性的区别是（）

A.有无视网膜下新生血管膜

B.视力下降的严重程度

C.有无玻璃膜疣

D.有无视物变形

E.以上都不正确

答案

参考答案：A

解析：湿性老年黄斑变性又称渗出性老年黄斑变性，有视网膜下新生血管膜存在，从而导致视网膜下出血、渗出、机化膜和最终盘状瘢痕。干性（萎缩性）老年黄斑变性眼底见大片RPE萎缩区和玻璃膜疣，萎缩区内脉络膜毛细血管萎缩。

单项选择题 A3/A4型题

患者，女性，78岁，慢性咳嗽、咳痰20余年，近5年来活动后气急，1周前感冒后痰多，气急加剧，近2天嗜睡。化验：白细胞18.6×10⁹/L，中性粒细胞0.9，动脉血pH7.29，PaCO₂80mmHg，PaO₂48mmHg。

如患者出现头痛、头胀、神志恍惚、躁狂谵语等，应考虑（）

A.呼吸性酸中毒

B.肺性脑病

C.窒息先兆

D.休克早期

E.脑疝出现

阅读理解

阅读下面短文，从短文后所给各题的四个选项（A、B、C和D)中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
People usually get into a hard life and are unable to escape from themselves.
There was once a poor and disappointed salesman complaining every day that there was no      for him to display his ability and the      was often pulling his legs.
At Christmas Eve, every family      their houses with lanterns and streamers and it was very      everywhere. But he was alone sitting in a bench in a park and recalling the past. It was on the same day last year when he was also alone      his Christmas day away,      new clothes, new shoes, let alone a new car and a new house.
“Damn! I have to spend this Christmas day with these old shoes again. ” he      and began to take off the old shoes.      , he glanced at a young man in a wheel chair passing by him with his hands strugglingly pushing the wheel forward. It      him that he was so lucky to have shoes to wear while that man did not even have the     . Afterwards, the sales man did anything with a calm      and cherished every opportunity to improve himself. He worked hard and tried his best to make progress every day. Several years later, he      changed his life totally and became a millionaire.
If you look all around, you will find there are so many people who were born      in the society but they are      in life and never complain about the unfair destiny. They are also not to beg others’ giving. Instead, they constantly      to make themselves stronger and more excellent to      the society. By contrast, we should feel      . We are born healthy, but we are      with life; we complain about our colleagues and dissatisfy with our jobs.
Maybe all of us would feel afraid when we realize we have fallen into such      state of life, but worse is that you even do not      you have fallen into such a dangerous situation.

C．celebrating

D．congratulating

B．Immediately

D．Surprisedly

C．depended on

D．concentrated on

B．recognition

B．fortunately

C．continuously

C．disappointing