（Ⅰ）已知x＞0，y＞0，x+2y=1，求1x+1y的最小值．（Ⅱ）已知a，b∈

下列关于人体血压的说法，正确的是______。

A.心室收缩时，动脉血压值称为收缩压，也称为低压 

B.正常的血压是血液循环流动的前提，受到多种因素的影响 

C.高血压对身体健康有重大危害，低血压不会影响身体健康 

D.高血压病人应遵医嘱，服用降压药；血压正常后，应立刻停药

阅读理解。

     I was small for my age. I was shy and sometimes it was hard for me to make friends with others.

However, learning came fairly easy for me. I was the best in most of my classes, but PE class was my

nightmare (恶梦) and made me feel that I was not as good as the others. Miss Forsythe was our PE

teacher. She was young and energetic. Everyone liked her. She said that we all had to come to her classes.

No one could hide from Miss Forsythe!

     One day she told me that she wanted me to play a game with another girl in a PE show. I was rather

worried that I wouldn't do a good job as she explained her idea, but she was excited. With her encouragement,

I had no choice but to agree.

     It was a "boy meets girl" game. I played the boy and my classmate, Margaret Ann, played the girl. We

were dressed in evening clothes and danced around the floor. According to Miss Forsythe, I had to pick up

Margaret Ann as we finished the dance. Since I was not strong enough to pick the tallest girl up, it was she

who picked me up. I suddenly felt ten feet tall! It was a huge success and everybody applauded (鼓掌) for

our excellent performance. What a wonderful ending! Afterwards, I smiled confidently (自信地).

     Miss Forsythe's understanding and willingness to create a place for me in her show (which certainly did

not need me) gave me some much needed confidence. She was and always will be my favorite teacher.

1. What do we know about Miss Forsythe? [ ]

A. She was good at dancing.

B. She was a strict and understanding teacher.

C. She liked to play games with the students after class.

D. She was a teacher who taught students how to dance.

2. How did the author feel about the game at first? [ ]

A. She was excited.

B. She thought it would be fun.

C. She was disappointed.

D. She was nervous.

3. According to the passage, the most exciting part of the game was when the author _____. [ ]

A. was dressed in the evening clothes

B. acted as a boy

C. danced around the floor

D. was held up by her classmate

4. It can be inferred from the passage that _____. [ ]

A. Miss Forsythe had planned the game that way on purpose (故意地)

B. Miss Forsythe helped the author pick up the tallest girl

C. the author was afraid when she felt ten feet tall

D. the author lost confidence by dancing with her Classmate

5. What is the best title for the passage? [ ]

A. Our PE Teacher -Miss Forsythe

B. My School Life

C. My Nightmare-PE Classes

D. A Game with My Classmate

病历摘要：男性，28岁，右眼视物变形伴黑影十天，不伴有眼红、眼痛史，眼部检查：视力右眼0.6+0.5DS→0.8，左眼0.8不能矫正。右前部未见异常，玻璃体可见少许漂浮物，眼底黄斑区有明显小点状渗出物，中心凹反光消失，左眼底黄斑区色素紊乱，中心凹反光暗淡。

中浆的病因是什么？（）

A.病毒感染

B.遗传因素

C.血管痉挛

D.内分泌因素

E.过敏反应

F.烟酒过度

G.病因不明

H.细菌感染

患者女，48岁。白带多，接触出血半年。妇科检查：宫颈糜烂状， * * 外观正常，子宫正常大小，双侧附件区无明显增厚。首选确诊检查是（）

A.宫颈锥切术

B.宫颈和宫颈管活检

C.宫颈涂片检查

D. * * 镜检

E.宫颈荧光检查

对粉尘性质经常变化的电除尘器，为保证其除尘效率，应适时调整其电压电流值。（）