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问题 多项选择题

急性胆囊炎的USG的表现为（）

A.胆囊增大、胆囊壁轮廓线模糊，外壁线不规则

B.胆囊壁弥漫性增厚，增厚的胆囊壁呈增强回声带

C.胆囊腔内出现弥漫性低回声、云雾状回声等提示胆囊积脓

D.胆囊窝显示无回声带，提示胆囊周围液体潴留或积脓

E.胆囊壁内无回声的散在小囊样憩室结构

答案

参考答案：A, B, C, D

完形填空

Many famous people had dreams when they were young. They often worked hard to make their dreams come true.

When I was only 13 years old, I first thought about what I should do in the future. I used to dream about being a basketball player, a soccer player, or a baseball player. However, I gave up these dreams because I was too short. Then I thought about going into music, so I bought a guitar. But I couldn’t play it very well. Then I had to give up my dream again. After that I thought about being a reporter and I worked really hard at it. At the age of 25, my dream came true and I became a reporter.

Finally, I learned the truth about making dreams come true. I should never give up and I must work hard.

Answer the questions according to the passage.

小题1:How old was the writer when he first had a dream?

小题2:Why did he give up being a basketball player?

小题3:How many dreams did he give up?

小题4:Did his dream come true at last?

小题5:What can you learn from this passage?
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单项选择题

硬质合金刀具用（）砂轮比较好。

A.氧化铝

B.碳化硅

C.氧化铜

D.碳化锂
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