单纯疱疹病毒性角膜溃疡的特点有（） A.角膜知觉下降 B.树枝状或地图状 C

阅读理解。

     Since my retirement from teaching music in 2001, I have spent a good deal of time painting as an artist. I actually began drawing again in the summer of 1995 when my father died, so perhaps I was trying to recover from the loss of my father, or maybe it was just that it brought back memories of him. In any case, I drew pen and ink animals and landscapes much influenced by Krenkel and St. John for five years.

      For some strange reason, I had been waiting until my retirement to start doing watercolors again, but as soon as I walked out of the school door for the last time I picked up my brushes and rediscovered Andrew Wyeth, who quickly became my favorite artist. I had looked through all the art books I had on my shelves and found his watercolors to be the closest to how I thought good watercolors should look. So I painted landscapes around Minnesota for three years and tried out many other types of painting. However, watercolors remained my first choice, and I think I did my best work there, showing my painting at a number of art exhibitions.

     Art is now together with my piano playing and reading. There is a time for everything in my world, and it is wonderful to have some time doing what I want to do. As Confucius once said, "At seventy I can follow my heart's desire."

1. What is the text mainly about?

A. Learning to paint in later life.  

B. How to paint watercolors.

C. An artist-turned teacher.          

D. Life after retirement

2. The author started drawing again in 1995 because ________.

A. he hoped to draw a picture of his father

B. he couldn't stop missing his father

C. he had more time after retirement

D. he liked animals and landscapes

3. We can infer from the text that the author ________.

A. had been taught by Krenkel and St. John

B. painted landscapes in Minnesota for 5 years

C. believed Wyeth to be the best in watercolors

D. started his retirement life at the age of seventy

4. How does the author probably feel about his life as an artist?

A. Very enjoyable.    

B. A bit regretful.

C. Rather busy.        

D. Fairly dull.

对放射性废物进行处置应考虑到废物的（）

A.放射性废物的性状

B.放射性核素种类

C.放射性核素半衰期

D.放射性核素比活度

E.以上均正确

男，60岁。右上腹疼痛伴黄疸3月余。B超检查肝脏多发性散在性占位病变，lAFP（-）。临床拟诊为继发性肝癌，其诊断的关键（）

A.肝穿刺

B.找出原发灶和解除胆道梗阻

C.CT

D.MRI

E.肝血管造影

船舶破舱进水后，为防止舱壁被压破，应对不进水一侧的舱壁进行支撑加强，其三角（人字）支撑法要点是（）

A.支柱应撑在舱内水位高度的1/3处；

B.支柱应撑在舱内水位高度的水侧压力中点附近；

C.支柱应撑在舱内水位高度的1/4处；

D.支柱应撑在舱内水位较高处。