题干

正常情况下,转氨酶主要分布在各种组织细胞内,以心脏和肝脏含量最高,在血浆中含量很低.当某种原因使细胞膜通透性增高或因组织坏死细胞破裂后,可有大量转氨酶进入血浆.这项事实可作为下列哪项结论的证据(    )

A:内环境是不稳定的,其稳态是不存在的

B:内环境的生化指标能反映机体的健康状况,可作为诊断疾病的依据

C:稳态的动态变化将不利于机体的正常代谢

D:内环境的稳态不受细胞代谢过程的影响

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答案(点此获取答案解析)

B

同类题4

阅读秦文君的《红书包(有删改)》,完成下面小题。

       ①20多年前,我还是个小学四年级学生。

       ②有一回,同班的汪丽娜背了一只崭新的红书包,那书包简直美极了,我只看它一眼,心里就发颤,不由得伸出手去摸一摸,大概它美到我心里去了。

       ③那天,我被这美丽的红书包缠绕着,别的一切感受都退得远远的。我甚至感到,快活与否,就同这书包紧密地连在了一起。放学时,汪丽娜就走在我的前面,我听见大伙都在议论她的书包漂亮,不觉有点儿生她的气。在此同时,一个念头从我心里升了起来:我一定要马上拥有一只这样的书包。

       ④一连几天,只要一放学,我就走上大街 ,专跑文具店。终于,我在一家小文具店的橱窗里,找到了这样的红书包。隔了层光闪闪的玻璃,我发现它更加吸引人了。我在它跟前站了许久,一会儿凑近着看,一会儿退远点看,过一会儿捂着眼单眼看。“没有什么能同它比美。”真的,当时我就那么想。

       ⑤我又奔又跑地赶到车站,等了三部公共汽车,才等到母亲从车上下来。她惊讶地看着我,我什么也不说,拉着她的手直奔那家文具店。到了那儿,就指着红书包说:“给我买吧,妈妈。”

       ⑥“可你的书包还挺新的,而且也很漂亮。”

       ⑦我不知怎的就想哭,一边死活不肯离开,像是打算在这儿站一辈子。母亲摸摸我发烫的额头,心就软了。没想到她摸出钱夹要付钱时,才发觉带的钱不够。可在这时,店要打烊了。

       ⑧夜里,我老做梦,梦见店里的红书包让人用一把大剪刀剪坏了,急得我大嚷大叫起来。爸爸把我唤醒,小声对我说,明天,他下了班就去把我的红书包买回来。

       ⑨第二天的整个白天,我都非常快乐,心里涌动着紧张和激动。见了汪丽娜,我就想:我马上就可以背上那只红书包,同你的那只毫无差别!到了傍晚,我突然变得惴惴不安:万一那店里的书包都让别人买去了呢!于是,我三番五次往那里跑,弄得店里人都开始皱起眉头来打量我。

       ⑩晚上,爸爸一手推着自行车,一手高高举着红书包回来了。我抢过那只鲜红的书包,高兴得打转。等狂喜过之后,才看见母亲正在给父亲搽松节油。原来,为了快点赶到店里,爸爸骑车时同一部黄鱼车撞在一起,膝盖上肿起老大一块。

       ⑪我的心情沉重起来:我怎么会不顾一切地迷上这红书包的,竟没发现爸爸的膝盖为了它受伤了呢。

       ⑫爸爸说:“爱美是件好事,可生活中美的东西太多。你跟在别人后面,永远也是跟不过来的,能体会美才是最美的事情。”

       ⑬第二天,我背着红书包兴高采烈地去学校,在校门口碰见汪丽娜,谁知她又换了个紫色的新书包 ,比原来的红书包漂亮不知多少倍。

       ⑭从那天起,我依然爱一切美丽,美的旖旎永远能给予我无限的灵感,可是从此就没有再像过去那样骄躁不安了。能懂得美,懂得美的东西美在何处有时就很知足了,也很快乐,世界上最美的东西莫过于存着的爱美的心。

       ⑮后来,那个红书包用旧了,而我一直珍藏着它。不为别的,就为它成了我生活的启示录。

      【注释】①打烊(yàng):关门停止营业。②旖旎(yǐ nǐ):柔和美好。

同类题5

阅读理解

    Located in the inner London Borough of Southwark, this hugely improved non-selective Secondary Academy School is looking to recruit (招募) and appoint a talented Science Teacher in April 2016 or sooner.

POSITION:Science Teacher |KS3 —5| All Science specialists are welcomed

DEPARTMENT:Popular & Ambitious Science Department

LOCATION:Borough of Southwark —Zone 2 —Inner London

PERSON:Qualified Science Teacher required —experience in UK

START DATE:April 2016 or sooner —full time & permanent contract on offer

SALARY:Inner London Pay Scale —£29,270 ~ £37,862 a year

PERSON REQUIREMENT:

    All applicants will need to be suitably skilled, trained and qualified to be considered for this Science Teacher position. Applicants should feel confident across Key Stage 3, 4 and 5, in addition to having a real desire to make a difference and provide pupils under their care with a first class education.

    SCHOOL & TRAVEL INFORMATION:

    This is a typically diverse inner city school, suitable for a broad range of pupils aged 11 to 18 years old. The school has made huge steps and progressed from a satisfactory to a good school. Results are constantly improving, thanks to the staff in place, who are responsible for creating and delivering a broad curriculum. The school site is a short walk away from the nearest underground and rail stations, positioned within inner London, Zone 2. Those living in South and Central London are perfectly positioned for this position.

    If you are a hardworking Science Teacher, hoping to become part of an improving Inner London Secondary, get in touch today. Please apply and submit your up-to-date CV using the form. One of the Clarus Education Team will be in touch within 48 hours if shortlisted(入围).