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【简答题】
阅读理解 When should you start to buy Christmas presents?One week before the day? Two weeks? Western children start buying presents months before Christmas Day. As the day comes nearer, children write lists of what presents they want to give and receive. Big shopping streets get crowded from late November. Everyone counts down'the number of shopping days left until Christmas'. Stores put up colored lights, and Christmas trees. You will hear Christmas songs like Jingle Bells in shop after shop. Some stores offer many dolls, stuffed animals and computer games. You can play with them to see if you like them-there are people to show you how things work. People try to get to the shops early, to buy presents before they sell out. In the week before Christmas, shops stay open late. Some stores open their doors at 9 am and close them at 9 pm,not 9 am until 5:30 pm as normal. It's very tiring for salespeople ! Some people save for months before the holiday,to have enough money to spend on their friends and family. But not everyone goes shopping for Christmas presents. Some people like to make their own gifts and cards. 1. When should Western children start to buy Christmas presents? A. December. B. November. C. October. D. September. 2. You may see some things in stores during the Christmas season except ___ . A. computer games B. Jack-O-Lanterns C. colored lights D. Christmas trees 3. People try to get to the shops early to buy presents because . A. the shops have many presents B. the shops stay open late C. they are afraid to buy no presents D. the shops are crowded 4. You can go shopping at in the week beforeChristmas. A. at 8 am B. at 9 am C. at 10 pm D. at 11 pm 5. The article is mainly talking about . A. Christmas trees B. Christmas parties C. Christmas presents D. shopping for Christmas
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【单选题】女士, 67 岁,入院诊断“肺源性心脏病、心力衰竭、肺性脑病”。护士配合医生进行抢救。该病人采取的吸氧方式应是
A.
低浓度间断吸氧
B.
高浓度持续吸氧
C.
低流量低浓度持续吸氧
D.
低流量高浓度间断吸氧
E.
高流量高浓度持续吸氧
【判断题】对于II型呼吸功能障碍的病人应该持续低浓度低流量给氧。( )
A.
正确
B.
错误
【单选题】我国先秦时期,主张“有教无类”,倡导“因材施教”的教育家是:
A.
孔子
B.
孟子
C.
荀子
【单选题】对缺氧和二氧化碳滞留并存的患者应给予低浓度、低流量持续给氧的原理不正确是
A.
该类病人呼吸主要靠缺氧刺激外周化学感受器
B.
对二氧化碳刺激更为敏感
C.
若吸入高浓度氧,解除缺氧对呼吸中枢的刺激作用
D.
若吸入高浓度氧,虽然缺氧得到某种程度的矫正,二氧化碳滞留更为严重
E.
若吸入高浓度氧,可发生二氧化碳麻醉,甚至呼吸停止
【单选题】为助于缺氧状态的改善给Ⅱ型呼吸功能衰竭病人的吸氧应该是( )
A.
低流量、低浓度
B.
高流量、高浓度
C.
无创呼吸机辅助呼吸
D.
有创呼吸机辅助呼吸
E.
不需要吸氧
【判断题】机动车向右转弯遇有同车道前车正在等候放行信号时,可以绕过前车借道通行。
A.
正确
B.
错误
【简答题】某校化学兴趣小组设计了图示实验装置(图中省略了夹持仪器)来测定某铁碳合金中铁的质量分数,并探究铁与浓硫酸的反应。 (1)m克铁碳合金中加入过量浓硫酸,未点燃酒精灯前,A、B均无明显现象,其原因是①常温下碳与浓硫酸不反应;② 。 (2)写出加热时A中碳与浓硫酸发生反应的化学方程式 。 (3)B中的现象是: ; C的作用是: 。 (4)待A中不再逸出气体时,停止加热,拆下E并称重,E增重bg。则铁碳合...
【简答题】某校化学兴趣小组设计了如下实验装置(图中部分夹持仪器已略去)来测定某铁碳合金中铁的质量分数,并探究铁与浓硫酸的反应。 请回答下列问题: (1)mg铁碳合金中加入过量浓硫酸,未点燃酒精灯前,A、B均无明显现彖,其原因是①_____②_____ (2)点燃酒精灯,可观察到B中的现象是_____________________,C 的作用是___________________ (3)待A中不再逸出气体...
【简答题】某校化学兴趣小组设计了图示实验装置(图中省略了夹持仪器)来测定某铁碳合金中铁的质量分数,并探究铁与浓硫酸的反应。 ⑴ m克铁碳合金中加入 过量 浓硫酸,未点燃酒精灯前,A、B均无明显现象,其原因是 ①常温下碳与浓硫酸不反应;② ___________________ 。 ⑵写出加热时A中碳与浓硫酸发生反应的化学方程式 ______________________ 。 ⑶B中的现象是: ______...
【单选题】动物手术室空气消毒常用的方法是
A.
电离辐射
B.
紫 外 线 照射
C.
甲 醛 熏蒸
D.
消 毒 药 水 喷洒
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