问题 单项选择题 A1/A2型题

患者,男性,32,发烧伴牙龈出血5天,查体:肝、脾及淋巴结未及,胸骨中下端压痛。血常规检查:白细胞数0.4×109/L,血红蛋白量65g/L,血小板数12×109/L。骨髓细胞形态学检查:白血病细胞极度增生,占95%,其胞体大小不一,多数较大,胞体不规则,胞质丰富,胞质中有丰富、较粗大的紫红色颗粒,胞质有内质、外质之分,核形不规则,扭曲、分叶,染色质细致,核仁可见。你考虑下列哪种白血病()

A.ALL

B.M1

C.M2B

D.M3

E.M5

答案

参考答案:D

解析:多数患者骨髓有核细胞增生极度活跃。以颗粒增多的早幼粒细胞为主,占30%~90%,可见少量原始、中幼粒细胞,早幼粒与原粒之比为3:1以上。颗粒增多的异常早幼粒细胞形态异常,胞体大,外形不规则,胞质中颗粒多,为大小不等的嗜苯胺蓝颗粒,紫红色而密集,有的出现内外浆,外浆颗粒少。白血病细胞胞质中多见短而粗的Auer小体,呈束状交叉排列,酷似柴捆样,故有人称"柴捆细胞"。胞核小而偏位,核染色质疏松,核仁1~3个,有时被颗粒遮盖而不清楚。

阅读理解

Modcm inventions have speeded up people’s lives amazingly. Motor-cars cover a bundred miles in little more than an hour. Aireraft cross the world a day, while computers operate at lightning speed. Indeed, this love of speed seems never-ending. Every ycar motor-cars are produced which go even faster each new computer boasts(吹嘘)of saving preeious seconds in handling tasks.

All this saves timc, but at a prick.When we lose or gain half a day in speeding aeross the world in an airplane, our bodies tell us so. We get the uncomfoerable feeling known as jet-lag; our bodies feel tlru they have been left bebind in anot ar nine zoors Again pending too long at compulers resul’s in painti ninrts and fingers. Mobile phones also to dange according to some seientists; too much uss may thesmit h bul radiation into our brains, a we do not like to think about.

Howave, what do we do with the time we have saved?Certainly not or so it seems. We are so accustomed to constant activity that we find it difficult to sit and do nothing, or even just one thing at a time. Pcrhaps the days are long gone when we might listen quietly to a story on the radio, letting imavination take us into another world.

There was a time when some people’s lives were devotcd simply to the cultivation of the land or the eare of eattle. No multi-tasking there; their lives wenl on at a much gentler pace, and in a familiar pattern. There is much that we might envy about a way of life like this. Yet before we do so ,we must think of the hard tasks our ancestors faeed;:they farmed with bare hands, often lived close to hunger, and had to fashion tools from wood and stone. Modem machinery has freed peope fre that primitive existcnee.

1.The new rooucts opcome more and more time-saving beeause_________.

A.our love of speed secure never-ending

B.time is limited

C.theprices are increasingly high

D.the manufacturers boast a lot

2.What does“the days”in Paragraph 3 refer to?

A.I maginary life               B.Simple life in the past

C.Times of inventions           D.Time for constant activity

3.What is the author’s attitude towards the modem teehnology?

A.Critical            B.Objective        C.Optimistic            D.Negative

4.What does the pa mge mainly diseuss?

A.The present and past times             B.Machinary and human beings

C.Imaginations and inventions            D.Modem technology and its influenec

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