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完形填空(共12小题;每小题1分,满分12分) (1)阅读下面短文,掌握其大意,然后从第31至第40小题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。 I know my brother better than anyone else in the world. Since the moment of his birth, I’ve been part of his life. I had spent seven  29    years in the world with the attention of those around me. But when Rohan was born, life   30     . Suddenly I had to share my toys and there were no more bedtime stories or my own choice of food. Finally, I felt my     31      at my brother. The poor baby had no idea what    32      me so unhappy. Maybe he found me strange, the only person in this house    33      did not like him. Whatever the reason was, he loved following me around. However, I seldom talked to him and   34      asked him to leave me alone. Then all that changed. I hardly remember everything of that day six years ago,   35    I do remember that I was feeling very angry. Somehow my feet led me to my brother’s bed. My hand, completely    36     from my mind, reached through the bars (护栏). At once, he reached out his small hand and softly touched   37      . And that was all I needed. Through all the unhappiness of the day, that one moment changed everything. How could I hate someone who made me     38     so important? For the   39      time, I saw my brother, not through the eyes of a child who was no longer favored (宠爱), but through the eyes of a   40    . 29. A. happy              B. hard          C. lonely              D. busy 30. A. began               B. continued C. changed            D. saved 31. A. fun                  B. anger               C. fear                  D. worry 32  A. makes        B. has made     C. is making          D. had made 33. A. which               B. where        C. who                 D. what 34. A. always             B. already       C. hardly              D. almost 35. A. but                  B. so             C. or                    D. for 36   A. far                   B. sick           C. different           D. free 37    A. one                  B. both          C. mine                D. them 38. A. feel                    B. feeling              C. feels                 D. felt 39   A. first                 B. second       C. last                  D. next 40. A. student             B. parent       C. teacher             D. sister
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【单选题】下面说法正确的是 。
A.
放大电路中的运算放大器只要是理想的,就一定存在虚短和虚断
B.
集成运放在开环情况下一般都工作在线性区。
C.
理想运算放大器的开环电压增益近似无穷大,输入电阻近似无穷大,输出电阻近似为零。
D.
在线性运算电路中,集成运放的反相输入端均为虚地。
【单选题】老年性痴呆可以分为三个时期,表现出失语、失认、失用是在()时期。
A.
轻度痴呆
B.
中度痴呆
C.
重度痴呆
D.
三度痴呆
【单选题】下面说法正确的是 。
A.
集成运放在开环情况下一般都工作在线性区。
B.
放大电路中的运算放大器只要是理想的,就一定存在虚短和虚断。
C.
在线性运算电路中,集成运放的反相输入端均为虚地。
D.
理想运算放大器的开环电压增益近似无穷大,输入电阻近似无穷大,输出电阻近似为零。
【单选题】关于老年期痴呆,以下说法 不正确 的是:
A.
属于DSM-V中描述的重度神经认知障碍
B.
指发生在老年期以认知功能缺损为主要临床表现的疾病
C.
病因可能是大脑退行性病变、感染、外伤、肿瘤等
D.
其中以阿尔茨海默病和血管性痴呆为主
E.
中国老年期痴呆的患病率并不高
【单选题】水是生命之源,既普通又宝贵。下列有关水的说法正确的是( )
A.
过滤可以将硬水转变成软水
B.
为使水中的悬浮杂质沉降,可在水中加入适量的明矾
C.
自然界中的水经过沉淀、过滤、吸附后即可得到纯水
D.
水体有自净能力,未经处理的生活污水可任意排放
【简答题】某次测量结果的平均值的置信区间表示为 (α=0.05,f=8),它表示置信度为______,测量次数为______,最低值为______,最高值为______。
【简答题】某次测量结果平均值的置信区间表示为:x±t0.95,8=12.39%±0.05%,它表示置信度为(),测量次数为(),最低值为(),最高值为()。
【单选题】下列有关水的说法正确的是 [     ]
A.
水可以溶解很多物质
B.
我国的淡水资源非常丰富
C.
用硬水洗衣服效果比用软水好
D.
铁丝在氧气中燃烧时,集气瓶底部水的作用是吸收有毒的气体
【判断题】视野是指当眼向前方固视某一点时所能看到的空间范围, 亦称中心视力
A.
正确
B.
错误
【简答题】某次测量结果平均值的置信区间表示为: 它表示置信度为 __________( 百分数) ,测量次数为 __________ ,最低值为 __________ 。
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