通过高考题精讲 cut off

中高考常考t u r n、h a v e、c u t、g e t、p u t、t a k e词组(英语+翻译)-CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN中高考常考turn、have、cut、get、put、take词组（英语+翻译）turnin turn 轮流,依次turn off 关掉,关闭；拐弯,使转变方向turn into v.变成；进入turn on 打开,发动turn out 生产；结果是；关掉；出动；驱逐turn over 移交给；翻阅；把…翻过来；发动；营业额达到；反复考虑turn left v.向左转turn right v.向右转turn around 船只留港turn in 交上；归还；拐入；告发；[口]上床睡觉turn back 往回走；阻挡；翻回到turn up 出现；发生；开大；发现；卷起；使仰卧turn out to be 结果是；原来是turn down 拒绝；向下转折turn from 对…感到厌恶your turn 轮到你；该你了turn away 避开；解雇；不准…入内；走开；转过脸turn round 转身,转向；归航；回车道；转变turn of the century 世纪之交；19世纪与20世纪转换交替时期；19世纪末20世纪初by turns 轮流；交替cutcut back削减；终止；急忙返回cut down削减；减少cut in插嘴,打断；突然出来cut off切断；中断；隔绝cut out删掉；戒掉cut short中断；打断；缩短getget across解释清楚；使人了解；通过get along相处；有进展，有起色get at得到；够得着；查明get away离开；出发；逃脱get by通过；逃脱；过get down to开始，着手get hold of抓住；掌握；获得；找到get in收获；进入；到达get into进入；对…发生兴趣；促使某人卷入某事get off下（车）；逃脱惩罚get on上车；进展get on to转入（另一话题或活动）；同…联系get on with继续做；在…方面获得成功；相处get out 泄露；说出；离去get over克服困难；解决；恢复过来get rid of避免，摆脱；除去get the better of占上风；胜过get through接通（电话）；完成get together集会；召集；收集taketake a chance冒险，投机take advantage of利用，趁…之机take after与…相象take apart / to piece拆卸（及其）take away拿走；使离开；消除（病痛等）take care当心，谨慎take care of照顾，照料；承担take charge of负责接管take down记下来；拆掉take effect生效，起作用take for (错)当作；(误)以为take for granted想当然，以为…理所当然take in吸收，接收；领会；欺骗take into account考虑进去，考虑到take off起飞；匆匆离去；脱下take on呈现；采纳；承担，从事take one's time不要着急，慢慢地做take over接收，接管，取代take pains尽力，煞费苦心take part in参加，参与take place发生，进行，举行take the place of代替，取代take to喜欢；养成…的习惯take turns 依次，轮流take up占去，占据；开始；从事take … for当作；误认为putput across解释清楚；使人接受put aside放在一边；储存；保留put away放好；收好put down写下；记下；镇压put forward提出；推荐；把…提前put in伸进；提出；提交；申请，请求put in for 申请；正式要求put into effect实行；执行put into operation实施，使生效，使运行put off延期；推迟；关掉；阻止，妨碍put on穿上；戴上；上演；增加（体重）put on speed 增加速度put out熄灭；关灯；生产出，出版put to use使用，利用put up举起；修建；提供put up with忍受；容忍put through 完成put together 装配put up 举起，张贴put up with 容忍put at 计算put by 储蓄havehave back 要回,收回have on 穿着,戴着have to do with 与…有关have about〔around〕1 (v.+adv.) have about〔around〕2 (v.+prep.) have one's wits about onehave against (v.+prep.)have a bias against (v.+n.+prep.) have designs against (v.+n.+prep.) have at (v.+prep.)have at heart (v.+prep.+n.)have back (v.+adv.)have a good excuse for (v.+n.+prep.) have to thank forhave in (v.+adv.)have act or part in (v.+n.+prep.) have a complaint in (v.+n.+prep.) have difficulty in (v.+n.+prep.)have a hand in (v.+n.+prep.)have one's heart in (v.+n.+prep.) have one's origin in (v.+n.+prep.) have one foot in the gravehave the game in one's handshave had ithave ithave it cominghave it in (v.+pron.+prep.)have it in for (v.+pron.+adv.+prep.) have it saidhave an abhorrence of (v.+n.+prep.) have the advantage of (v.+n.+prep.) have the appearance of (v.+n.+prep.) have an attack of (v.+n.+prep.) have a bellyful of (v.+n.+prep.) have the best of (v.+n.+prep.)have the best of both worldshave charge of (v.+n.+prep.)have the foot of (v.+n.+prep.)have the makings of (v.+n.+prep.) have no brow of (v.+n.+prep.)have none of (v.+pron.+prep.)have on (v.+adv.)have on the brain (v.+prep.+n.) have cognizance over (v.+n.+prep.) have command over (v.+n.+prep.) have an eye to (v.+n.+prep.)have under one's girdle (v.+prep.+n.) have up one's sleeve (v.+prep.+n.) have done withhave fun with (v.+n.+prep.)have no traffic with (v.+n.+prep.) have nothing to do withhave weight with (v.+n.+prep.) have a word with (v.+n.+prep.)。

区别：参考区间和cutoff值cutoff即临界值，是判断检测结果的标准。

检测标本吸光度（OD值）≥cutoff即判为阳性，<cutoff判为阴性。

现在一般用s/co，≥1为阳性，<1为阴性。

cutoff的设置因试剂厂家不同，方法不同而设置不同，试剂说明书都会有cutoff的设置。

厂家cutoff的设置是经过检测大量的标本（包括正常人、病人），通过统计学分析来设置的。

由于国产试剂的质量尚需提高，某些实验的阴性对照经常成为定值（因为阴性对照<0.05按0.05计算，cutoff＝0.05×某个常数或阴性对照＋某个常数，如HBsAg的cutoff＝2.1×0.05），造成cutoff亦为定值。

参考区间：解释检验结果是正常还是异常的依据区别血清和血浆血清的主要成分：血清是由血浆去除纤维蛋白原而形成的一种很复杂的混合物，其组成成份虽大部分已知，但还有一部分尚不清楚，且血清组成及含量常随供血动物的性别、年龄、生理条件和营养条件不同而异。

血清是血浆中不含纤维蛋白原的胶状液体,具有维持血液的正常粘度、酸碱度、渗透压等作用。

它主要由水和各种化学成分组成,这些化学成分包括白蛋白、α1、α2、β、γ-球蛋白,甘油三酯,总胆固醇,谷丙转氨酶等。

血清中含有各种血浆蛋白、多肽、脂肪、碳水化合物、生长因子、激素、无机物等，这些物质对促进细胞生长或抑制生长活性是达到生理平衡的。

对血清的成分和作用的研究虽有很大进展，但仍存在一些问题。

主要是：第一:血清的成份可能有几百种之多，目前对其准确的成份、含量及其作用机制仍不清楚，尤其是对其中一些多肽类生长因子、激素和脂类等尚未充分认识，这给研究工作带来许多困难；第二:血清都是批量生产，各批量之间差异很大，而且血清保存期至多一年，因此，要保证每批血清的相似性极为困难，从而使实验的标准化和连续性受到限制；第三:不能排除血清中含有易变物质，这被认为是“瓶中恶化”的原因之一。

⑶ vt. to prevent sb/sth from leaving or reaching a place
or communicating with people outside
a place 使……与外界隔绝
→ cut sb/sth off (from sb/sth)
cut off及cut相关短语
1. disconnect（the supply of water or electricity）； interrupt；turn off 切断（水、电）；中断；关掉
Their water supply was cut off. 他们的水源被切断了。
All communications are cut off. 一切交通都被切断了。
cut off及cut相关短语
【知识点解析】
7. cut through：vt. ⑴ vt. to make a path or passage through something by cutting or to move or pass easily through water or air 开辟(出路或通道)
cut off及cut相关短语
【知识点解析】 The telephone operator cut us off before we had
finished our conversation.
我们还没有谈完，电话就被总机接线员切断了。
The chairman will cut a speaker off if he talks too long.
cut off及cut相关短语
【知识点解析】 5. cut off:
⑴ vt. to remove sth (from sth larger) by cutting 切断，割断，剪断 ① She cut off a small piece of bread and gave it to me. ② The workman had a finger cut off by the machine he was operating. ③ The winner cut ten seconds off the world record. 获胜者比世界记录快了十秒 ④ Cut the fat off the meat.

通过高考题讲解虚拟语气的省略与倒装考点呈现：（1995上海）16.____________for the free tickets, I would not have gone to the films so often.A.If it is notB.Were it notC.Had it not beenD.If they were not本题解析：选C (高考考察最多类型)从意思上看，本题是个虚拟条件句。

如果不是因为那些免费的票，我就不会那么频繁的去看电影了。

本题原文：If it had not been for the free tickets, I would not have gone to the films so often.（对过去虚拟谓语动词用had）省略后就变成：Had it not been for the free tickets, I would not have gone to the films so often.(2006湖北) 31．fired, your health care and other benefits will not be immediately cut off.A．Would you be B．Should you beC．Could you be D．Might you be本题解析：选B从意思上看，本题是个虚拟条件句。

如果你被解雇了，你的医保和其他福利将会被立即切断。

本题原文：If you should be fired, your health care and other benefits will not be immediately cut off.（对将来虚拟谓语动词用should）省略后就变成：Should you be fired, your health care and other benefits will not be immediately cut off.(2010浙江) 10．Had I known about this computer program, a huge amount of time and energy .A．would have been saved B．had been savedC．will be saved D．was saved本题难点就是虚拟语气的倒装考察的是主句部分。