问题 单项选择题

导致管涌或流土的原因包括堤基内有古河道、历史溃口、()等隐患。

A.黏土层

B.强透水层

C.密实的岩石层

D.隔水层

答案

参考答案:B

完形填空
  A few weeks after my first wife, Georgia, was called to heaven, I was cooking dinner for my son and myself. For a  , I had decided on frozen peas. As I was cutting open the bag, it ________from my hand and crashed to the floor. The peas, like marbles, _______everywhere. I tried to use a broom, ____ with each sweep they just rolled across the kitchen.
For the next week, every time I was in the ____, I found a pea---in a corner, or behind a table leg. They kept _____. Eight months later I pulled out the refrigerator to clean behind it, and ____ 12 frozen peas hidden underneath.
At the time I found those few remaining ____, I was in a new relationship with a wonderful ____ I’d met in a support group. After we married, I was reminded ____ those peas under the refrigerator, and realized that my ____ had been like that bag of frozen peas. It had shattered. My wife had died; I was in a new city with a busy job, and with a son having trouble___ his new surroundings and the ____ of his mother. I was a bag of spilled frozen peas; my life had come apart and scattered.
When life gets you ____, when everything you know comes apart, and when you think you’ll never ____, remember that it’s just a bag of scattered frozen peas. The peas can be ___, and life will move on. You’ll find all the peas ___, including the ones that are hardest to find. And when you’ve got them ___, you’ll start to feel whole again.
The life you know can break apart at any time. But you’ll have to ____, and how fast you collect your peas depends on you. Will you keep scattering them around with a broom, __will you pick them up one by one and put your life back together?
小题1:
A.drinkB.fruitC.vegetableD.meat
小题2:
A.movedB.walkedC.ranD.slipped
小题3:
A.rubbedB.rolledC.grewD.existed
小题4:
A.butB.andC. althoughD. so
小题5:
A.bedroomB.living roomC.kitchenD.storeroom
小题6:
A.gettingB.turning upC.taking upD.using up
小题7:
A.foundB.ateC.leftD.planted
小题8:
A.presentsB.cansC.vegetablesD.peas
小题9:
A.manB.childC.womanD.boy
小题10:
A.ofB.forC.withD.in
小题11:
A.wifeB.lifeC.sonD.friend
小题12:
A.turning toB.leading toC.adjusting toD.adding to
小题13:
A.thankB.loveC.helpD.loss
小题14:
A.downB.nearC.closeD.wide
小题15:
A.get itB.make itC.take itD.leave it
小题16:
A.grewB.boughtC.collectedD.frozen
小题17:
A.eventuallyB.fortunatelyC.properlyD.specially
小题18:
A.bothB.allC.eitherD.each
小题19:
A.call onB.put onC.bring inD.move on
小题20:
A.whileB.becauseC.sinceD.or
单项选择题

美国科学家声称,每人生来有两个脑,即颅脑与肠脑.肠脑位于食管、胃脏、小肠与结肠内层组织的鞘中,含有神经细胞、神经传递质、蛋白质和复杂的环行线路.结肠炎、过敏性肠综合症等都与肠脑内产生的问题有关.肠脑中几乎能找到颅脑赖以运转和控制的所有物质,如血清素、多巴胺、谷氨酸、去甲肾上腺素、一氧化氮等.此外,肠脑中还存在多种被称为神经肽的脑蛋白、脑啡肽以及对神经起显著作用的化学物质.颅脑面临惊恐时释出的应激激素会冲击胃脏产生痉挛;惊恐又引起交感神经影响肠脑的血清素分泌量.应激激素过分刺激还会导致腹泻.当情绪压抑时,食管神经受到高度刺激会感到吞咽困难;颅脑释出的应激激素还会改变胃脏与食管间的神经功能,导致胃灼热.最初的脑神经系统起始于管形动物,生存竞争需要更复杂的颅脑,从而发展了中枢神经系统.重要的肠神经系统不能进入头颅与胃肠相联,而为了适应高级动物进食和消化的需要,自然法则就保存了有独立功能的肠神经系统.就人而言,早期胚胎发育中产生的神经脊,一部分进入了中枢神经系统,另一部分变成肠神经系统,通过迷走神经连接两者——颅脑和肠脑.

下列解说,不符合原文意思的一项是______.

A.美国某些科学家否定了每人只有颅脑的观点

B.美国某些科学家对肠神经的位置和功能提出了新的见解

C.美国某些科学家对肠胃疾病的产生补充了新的见解

D.美国某些科学家对人类某些器官的发生过程提出新观点