普萘洛尔治疗心绞痛的主要药理作用是 A．扩张冠状动脉 B．降低心脏前负荷 C．阻断

患者男，64岁。左腹股沟可复性包块5年。吸烟史40年，偶有咳嗽。近3个月来夜尿次数增多。查体：左侧腹股沟韧带中点上方至阴囊有一6cm×8cm“梨形”包块，平卧时可回纳腹腔，压迫内环试验阳性。X线胸片：肺纹理增多。肛门指诊：前列腺增大，中央沟消失。

根据患者情况，目前的处理宜采取（）

A.Bassini法疝修补术

B.McVay法疝修补术

C.疝成形术

D.Ferguson法疝修补术

E.暂不手术

第三部分 阅读理解（共20小题，每小题2分，满分40分）

请认真阅读下列短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项, 并在答题卡上将该项涂黑。

The truth in other words

A blind boy sat on the steps of a building with a hat by his feet. He held up a sign which said: “I am blind, please help.” There were only a few coins in the hat.

A man was walking by. He took a few coins from his pocket and dropped them into the hat. He then took the sign, turned it around, and wrote some words. He put the sign back so that everyone who walked by would see the new words.

Soon the hat began to fill up. A lot more people were giving money to the blind boy. That afternoon the man who had changed the sign came to see how things were. The boy recognized his footsteps and asked: “Were you the one who changed my sign this morning? What did you write?”

The man said: “I only wrote the truth. I said what you said but in a different way.”

What he had written was : “Today is a beautiful day but I cannot see it.”

Do you think the first sign and the second sign were saying the same thing?

Of course both signs told people the boy was blind. But the first sign simply told people to help by putting some money in the hat. The second sign told people that they were able to enjoy the day, but the boy could not enjoy it because he was blind.             The first sign simply said the boy was blind. The second sign told people they were so lucky that they were not blind.

There are at least two lessons we can learn from this simple story.

The first is : Be thankful for what you have. Someone else has less. Help where you can.

The second is: Be creative. Think differently. There is always a better way!

56. The man wrote some words on one side of the boy’s sign because       .

A. he thought that the blind boy didn’t know how to write

B. he wanted to prove that the boy was really blind

C. he thought that the boy couldn’t get any money

D. he wanted to help the poor blind boy

57. The changed sign worked better than the original one because        .

A. the original sign told people to do things, which people don’t like

B. the second sign made people see their health as a gift, which made them willing to help

C. the original sign pointed out a kind of suffering that people don’t care about at all

D. the second sign drew people’s attention to another problem the boy had

58. We can learn from the story that the man who rewrote the sign was        .

A. creative      B. patient       C. funny      D. curious

59. The story shows us that        .

A. thinking in a different way can get us out of trouble

B. learning to be thankful for what we have may help us to live happier lives

C. creative thinking may bring us better results

D. being kind and respectful will encourage blind people to help themselves

某样品除锌粉外还可能含有C粉、CuO粉末的一种或两种．将粉末加入到一定量的稀硫酸中，充分反应后过滤，向滤液中插入铝丝，看到有气泡产生，将滤渣在氧气中充分灼烧，产生能使澄清石灰水变浑浊的气体，并仍有固体残留．下列有关说法正确的是（　　）

A．样品可能有C、CuO，滤液一定有H₂SO₄、ZnSO₄

B．样品一定没有CuO，滤液可能有H₂SO₄、ZnSO₄

C．滤渣一定有C、Cu，滤液一定有H₂SO₄、ZnSO₄

D．滤渣可能含有C、Zn，滤液一定有CuSO₄、ZnSO₄

红、蓝宝石质量评价有哪些要点？

肺泡表面活性物质的生理作用是

A．使肺泡趋向于缩小
B．增加毛细血管滤过
C．降低肺的顺应性
D．降低气道阻力
E．降低肺的表面张力