在（）中具有同一压力系统、同一油水界面的油、气聚集体，称为油气藏。

A boy called Mario had many friends, and he was proud of it. Whoever he met, he would like to show off(炫耀) how popular he was at school.

One day, his grandpa said to him, “Mario, I know that you don’t have as many friends as you think. Many of them are not true to you.”

Mario thought maybe his grandpa was right. However, he wasn’t sure how he could test whether his schoolmates were real friends or not, so he asked his grandpa. The old man answered, “I have just exactly what you need. It’s in my room. Wait a minute.” The old man left, soon returning as if(好像) carrying something in his hand, but Mario could see nothing there.

“Take it. It’s a very special chair. Because it’s invisible, it will be hard for you to sit on it. However, if you manage to sit on it, you can use the chair’s magic power（力量） to tell who your real friends are.”

Mario took the strange invisible chair to school. At break time he asked everyone to form a circle, and he put himself in the middle, with his chair.

“Nobody move. You’re about to see something amazing，” said Mario. Then he tried sitting on the chair. Having difficulty seeing it, he missed and fell to the ground. Everyone had a pretty good laugh. “Wait, wait,” said Mario, making another try. But again he missed the seat.

Mario didn’t give up. He kept trying to sit on the magic chair. Finally, he did it. This time he felt himself in mid-air.

Then he experienced the magic that his grandpa had been talking about. Looking around, Mario saw George, Lucas and Diana holding him up, so he wouldn’t fall. But some schoolmates whom he had regarded as friends had done nothing but made fun of him. Mario was quite thankful to his grandpa, who helped him test who his true friends were.

小题1:Mario’s grandpa gave him a special chair to _____.

A．sit on in the school

B．be his birthday present

C．test who his true friends are

D．play games with his friends at school小题2:What does the underlined word “invisible” mean in Chinese in the passage?

A．感激的

B．有帮助的

C．神奇的

D．看不见的小题3:Mario succeeded in sitting on his chair finally because_____.

A．his friends taught him

B．he had tried many times

C．his friends held him

D．the chair had magic power小题4:Which would be the best title（标题）for this story?

A．A Magic Chair

B．A Kind Grandpa

C．Mario’s True Friends

D．How to Test Friends

男性，32岁，4天前，用锤子敲打石头时右眼被异物射伤。眼科检查：右眼视力眼前手动，球结膜轻度充血，10点方位角膜见3mm大小全层伤口，伤口水肿，前房深度正常，房水（+），下方积脓1mm．虹膜纹理不清后粘连，10点虹膜中周处有一穿通口，瞳孔4mm×3.5mm，对光反射消失，瞳孔区纤维性膜样渗出，晶状体混浊，看不清视网膜，眼压Tn。

如果处理不当，最严重的并发症是（）

A.视网膜脱离

B.眼铁质沉着症

C.交感性眼炎

D.继发性青光眼

E.眶蜂窝织炎

在心电门控技术中，其触发波为()

A．P波

B．R波

C．Q波

D．S波

E．T波

按照国家统一规定，空气质量达到优良标准即达到国家质量二级标准是指空气污染指数小于等于（）。

A.50

B.80

C.100

D.200

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