人如果漂浮于海洋中，无淡水供应，就有生命危险，而喝海水只会提高这种危险性。这是因

Imagine that the genome （基因组） is a book．The book consists of 23 chapters with thousands of stories made up of paragraphs, words and letters on different levels．There are one billion words in the book, as long as 800 Bibles; if I read the genome out to you at the rate of one word per second for eight hours a day, it would take me centuries; if I wrote out the human genome, one letter per millimeter, my text would be as long as the River Danube．This is a huge volume, a book of great length, but it all fits inside an extremely small cell nuclear（细胞核） that fits easily upon the head of a pin．

The idea of the genome as a book is not, strictly speaking, even a metaphor．It is true to a great extent．A book is a piece of digital information, written in one-directional form and defined by a code that translates a small alphabet of signs into a large dictionary of meanings through the order of their groupings．So is a genome．The only difference is that all English books read from left to right, while some parts of the genome read from left to right while some from right to left, but never both at the same time．

While English books are written in words of different lengthens using twenty-six letters, genomes are written entirely in words of three-letter length, using only four letters, and instead of being written on flat pages, they are written on long chains of DNA molecules （分子）．

The genome is a very clever book, because in the right condition it can both photocopy itself and read itself．

小题1:How do human genomes read according to the passage?___________

A．Only from left to right．

B．Only from right to left．

C．From both directions at the same time．

D．From one direction at a time．小题2:We can learn from the passage that the human genome ________．

A．is as long as the River Danube

B．can be easily placed on the head of a pin

C．is coded with an alphabet of four letters

D．is smart enough to read and take photos of itself小题3:It can be concluded that the passage is mainly written for ______．

A．specialists in the field

B．general readers

C．natural scientists

D．readers with professional knowledge小题4:The real purpose of the author’s comparison of the genome to a book is _____．

A．to focus on the differences between the two

B．to lay emphasis on the similarities between the two

C．to simplify the concept of the human genome

D．to give an exact description of the human genome

医院统计部门的职责包括（）。

A.记录和管理本单位原始数据

B.记录和上报本单位原始数据

C.奖励在统计工作中表现突出的有关人员

D.管理本单位的统计调查表和各项基本统计资料和数据库

E.以上均是

临床资料：女，35岁，自述双侧 * * 轻度胀痛，以月经前期明显，月经来潮后疼痛减轻。超声综合描述：双乳腺腺体层厚度1．6cm，回声不均，结构紊乱，可见大小不等形态各异的小无回声区，部分融合。超声提示（）

A.乳腺正常声像图

B.双乳腺炎

C.双乳腺多发囊肿

D.双乳腺囊性增生病合并乳腺导管扩张

子宫肌瘤与子宫内膜异位症的共同点有（）

A.多发生于性成熟期妇女

B.常是不孕的原因

C.绝经后可停止发展

D.多有白带增多

E.孕激素治疗有效

某女，30岁，腹泻3天。便稀有黏液，肛门灼热，舌红、苔黄腻，治疗应选取哪组经脉为主()

A.手阳明、足太阴经

B.足阳明、足太阴经

C.手阳明、足阳明经

D.手太阳、足阳明经

E.任脉、足阳明经