问题 阅读理解

阅读下列材料, 从所给的六个选项(A、B、C、D、E、和F) 中,选出符合各小题要求的最佳选项。选项中有一项是多余选项。

________1. Jack just moved to a new place in Nelson. He wants to buy a house, but he hasn’t much money and his job is not well paid. So he needs a house whose price is about£50,000 and at least has two bedrooms.

________2. Lucy is now 65 years old. She is not very healthy and it is difficult for her to move. So she now wants to find a bungalow (平房) in Earby so that she can easily go out of the house to enjoy the sun in winter and fresh air outside in summer.

________3 Alice was very poor before, but recently she got a highly paid job and wanted to change her house into a better one. But the house should at least have four bedrooms and two reception rooms. What’s more, it should look like the house in the countryside.

________4. Peter now  lives in Nelson. He dreams of having a house with at least three bedrooms. Besides, he doesn’t like high buildings.

________ 5 Lynne has lived in Newchurch for many years and now she wants to buy a house for a change. She wants the house to be semi-detached (半独立式) or detached. She also wants a separate garage.

A.    Top Barn Lane, Newchurch, Lancashire, £49,950, flat on 30th floor.2 bathrooms with 3-piece suite in white, 1 reception room, 1 large lounge, 1 fully fitted kitchen,2 double bedrooms.

B.     Queensway, Newchurch, Lancashire, £109,500, semi-detached house. 2 countryside view fronts, 2 double bedrooms, 1 modern fitted dining room, 1 detached garage opposite.

C.     White Leys Close, Earby, Barnoldswick, £129,950, bungalow. 2 bathrooms, 1 reception room, 1 living room split into sitting and dining areas, doors to garden, a kitchen with a range of fitted bases. Outside of the front is a road for two cars and a garden area.

D.    Birch Hall Lane, Earby, Barnoldswick, £180,000. 5 bedrooms, 3 bathrooms, 3 reception rooms. Traditional stone built houses next to some cottages on one side. There is a small cycle store and a long, beautiful wildlife garden.

E.     Craven View, Nelson, Lancashire, £185,000. Bungalow, 3 bedrooms with fitted wardrobe, 2 bathrooms, 1 reception room, 1 L-shaped living room with sitting and dining areas, fireplace around, French windows to back gardens, 1 kitchen with bright lighting.

F.     Farrer Street, Nelson, Lancashire, £ 45,000. A stone built house. Although requiring a degree of refurbishment (刷新), this two bedroomed house does still offer a good deal. It includes 1 dining kitchen, two bedrooms, three-piece bathroom, gas fired central heating and the yard to the back.

答案

小题1:F

小题1:C

小题1:D

小题1:E

小题1:B

填空题
单项选择题

阅读下面短文,回答文后问题。
磁共振现象为成像技术提供了一种全新思路:将人体置于特殊磁场中,用无线电射频脉冲激发人体内氢原子核,引起氢原子核共振,并吸收能量;在停止射频脉冲后,氢原子核按特定频率发出射电信号,并将吸收的能量释放出来,被人体外的接收器收录,经电子计算机处理获得图像。
许多原子核的运动类似“自旋体”,不停地以一定的频率自旋。如果把物体放置磁场,原子核可以在磁场中旋转。磁场的强度和方向,决定原子核旋转的频率和方向。在磁场旋转的原子核有一个特点,即可以吸收频率与旋转频率相同的电磁波,使原子核的能量增加;当原子核恢复原状时,就会把多余的能量以电磁波的形式释放出来;用适当的电磁波照射它,然后分析它释放的电磁波,就可以得知构成这一物体的原子核的位置和种类,据此绘制物体内部精确的立体图像。
水约占人体体重的2/3,在人体不同组织和器官中,水分比例不一样。有趣的是,许多疾病的病理过程会导致水分变化,而这种变化恰好能在磁共振图像中反映出来。因为水由氢原子和氧原子构成,氢原子核能够起到类似显微指南针的作用。在身体暴露于一个强磁场,无线电波的脉冲传递到位后,原子核的能量便开始改变。在脉冲之后,原子核返回先前的状态,—一个共振波便发射出来。这样,原子核振荡的微小变化就可以探测出来。通过先进的计算机编程,可以创建一个包括不同水含量和水分子运动的反映组织化学结构的三维图像。从而在被观察的身体部位产生非常清晰的组织或器官图像,有利于弄清疾病的病理变化。
由于磁共振成像与X射线、CT等原理完全不同,故对人体没有兵贵神速,几乎适用于全身各系统不同疾病的检测;尤其对颅脑、脊椎和脊髓疾病的检测,更能显示它优于CT。它可以不用血管造影剂即显示血管结构,故对血管、肿块、淋巴结和血管结构之间的鉴别更加独到。它对软组织的分辨能力高于CT数倍,能够敏感地检测出组织成分中水含量的变化,因而常比CT更有效亦更早地发现病变。磁共振成像技术的优越性,使得这项新的影像学技术越来越显示出强大的生命力。
磁共振成像技术是2003年诺贝尔生理学或医学奖表彰的一项奠基性成果。瑞典卡罗林斯卡医学院把 2003年诺贝尔生理学或医学奖授予现年74岁的美国科学 * * 罗·劳特伯和现年70岁的英国科学家彼得·曼斯菲尔德,以表彰他们在磁共振成像技术领域作出的突破性贡献。诺贝尔奖评选委员会认为,用一种精确的、非入侵的方法对人体内部器官进行成像,对于医学诊断、治疗和康复非常重要。两位科学家的成果对磁共振成像技术的问世起到了奠基性作用。这篇阅读选材可以说是紧扣科技发展的脉搏,具有很强的时代感,对引领当代高中生及时关注世界重大科技发展信息,扩大自然科学阅读面具有较好的启示作用。
(《物理学与医学交叉碰撞出诺贝尔奖》(删改),选自《大众科技报》,2003年10月14日)

根据原文,下列表述不属于磁共振成像原理内容的一项是:

A.在磁场旋转的原子核可以吸收频率与旋转频率相同的电磁波,使原子核的能量增加。

B.许多疾病的病理过程会导致水分变化,而这种变化恰好能在磁共振图像中反映出来。

C.在磁场旋转的原子核恢复原状当时,就会把多余的能量以电磁波的形式释放出来。

D.分析被电磁波照射后的原子核所释放出来的电磁波,就可得知该原子核的位置和种类。