自精原细胞起最后变成精于，须经过复杂的分裂和形成过程。在此过程中，染色体数目（） A

女，33岁。因每半月“行经”一次而来就诊。诉其月经期为7天，经净1周后又少量出血，色红质黏稠，如经如带，淋漓2～3天即净。诊断为

A．经间期出血

B．月经先期

C．月经过少

D．经漏

E．赤白带

My father never wanted his children to know what he did for a living．Dad worked in Plant C．Lying beside lake Erie, it saw him in at sunrise and out at nightfall．Sometimes my mother would take my siblings （兄弟姐妹） and me to the public beach in our hometown of Ashtabula． she'd gather us round and point to the smokestacks, coughing clouds into the sky．

"Wave to daddy!" she'd shout. Four little hands would shoot into the air．I never knew what Dad did in Plant C, but during 34 years of hard work, he had surgery （手术） on his shoulder and hand．At 48, he had his first heart attack．He retired in 1993, right after the last kid graduated from college．But the damage was done．A few years later, the next heart attack killed him．

I saw my dad in Plant C only once, when I took dinner to him．That night, I looked at my father, covered in sweat and coal, and for the first time I knew why he was so often angry for no reason．

Recently my father' s friend, Toby Workman, walked me there．I knew my father never wanted me to see it．At every station, he described the job and the danger．It was like listening to a foreign language．I walked past many DANGER signs．Toby put his hand on my shoulder．"look," he said, "you need to understand something．Your dad was a maintenance mechanic．He worked the most dangerous job．If something broke, he fixed it．"

A few days later, my daughter graduated from college．I gave her the hard hat Toby handed to me as I left, and this notes: " Whenever you feel something difficult, put this on, look in the mirror, and remember your roots．"

小题1:How many siblings does the author most probably have? ____．

A．Three siblings   B．Two siblings                  C．One sibling      D: Four siblings

小题2:Which of the following is TRUE of the facts about the author's father? ____

A．He didn't suffer a heart attack until he retired．

B．He worked in Plant C for 48 years in all．

C．He was hardly angry in his daily life．

D．He did physical work in Plant C.

小题3:When Toby Workman described the author' s father' s job, the author ____．

A．felt familiar with the job

B．didn’t quite understand

C．wanted to learn a foreign language

D．decided to do the same work小题4:The author gave her daughter the hat, hoping that her daughter could ____．

A．remember her grandfather

B．overcome all difficulties by wearing it

C．get encouraged by her grandfather

D．follow her grandfather' s work

患者，女，32岁。下腹部有包块2年多，伴月经量增多，前来某医院就诊。门诊接诊医师检查，初诊为"子宫肌瘤"。入院后，进修医师按"子宫肌瘤"书写了病历。经治医师在没有做宫腔长度及B超等检查的情况下，完全相信了门诊的诊断，自行决定做子宫切除术。术前，未执行上级医师"再详细探宫腔"的指示；术中，发现子宫体较软时，助手提示"需排除妊娠可能"，术者仍未听取，在未行子宫穿刺的情况下，错误地将子宫及双侧卵巢全切。切开子宫，见一胎儿。该患者已生有一男一女，系绝育对象。术后，医务人员对是否向患者家属讲明实情，持赞成和反对两种意见。

若将事故实情告知患者家属，针对手术者应负的道德责任，最正确的说法是（）

A.违背"审慎"的医德要求，未作必要的认真的检查，造成医疗事故。

B.经验不足，对技术常规不熟悉，系医疗事故

C.虽错误切除子宫，但同时为患者做了需做的人流和绝育手术，功过参半

D.手术未造成其他伤害，患者应予谅解

E.门诊接诊医师、手术助手、上级医师均应负道德责任

简述网络招聘的优劣势。

土壤施（）肥过多，烟株生长过盛，叶片组织生长过于幼嫩时，烟株的抗病性降低．病害往往严重。

A．N

B．P

C．K

D．有机