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问题 单项选择题

下列哪项对鉴别上下消化道出血可能有帮助（）

A.大便潜血阳性

B.血尿素氮升高

C.血肌酐升高

D.血色素下降

E.血氨升高

答案

参考答案：B

解析：上消化道大出血后，由于大量血液蛋白质的消化产物在肠道被吸收，可导致肠源性氮质血症，血尿素氮升高。

改错题

文章共有10处错误。每句最多两处。多者从第11处起不计分。

1. 增加：缺词处加∧，并在下面写出该词。

2. 删除：多余的词用╲划掉。

3. 修改：错词下面划一横线，并在下面写出修改后的词。

注意：1.每处错误及其修改均仅限一次；

2.只允许修改10处，多者（从第11处起）不计分。

In order to realize his dream, Bill Gates, richest man in the world, gave in studying in Harvard University, that is the most famous in the world. He set up a company and researching the computer software. An old saying go: “Interest is the best teacher.” I quite agree with this idea. I began to be crazy about English when I was a little girl. I got particular interested in foreign cultures or customs. To meet us curiosity, I read English stories every day. It seemed to be the best “meal” of a day. As for a result, I always did very well in English exam. Interest is the key to success.
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单项选择题 A1/A2型题

酮体包括下列哪项物（）。

A.丙酮

B.丙酮、β-羟丁酸

C.β-羟丁酸

D.丙酮、乙酰乙酸

E.丙酮、β-羟丁酸、乙酰乙酸
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