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【简答题】
I will never forget the year when I was 12.My mother told us that we would not get Christmas gifts because there was not enough money .I felt sad and thought, ”What shall I say when the other kids ask me about my gifts?” I started to hope the Christmas wouldn’t come that year. Just then three women came to our house with gifts for all of us. For me,they brought a doll .I felt so happy. Years later, my life changed a lot. So one Christmas, I wanted to do something special. I asked forty friends to help me. We visited 125 orphans(孤儿)to come to our Christmas party. For every child, we prepared a beautiful gift. Finally the moment came. I called out,” One, two, three. Open your gifts!” As the children opened their boxes, the whole room was full of their bright smiles. The feeling I got from that Christmas so long ago came again. 小题1:___gave the writer a Christmas gift when she was 12. A.Nobody B.Her mother C.Three women D.An old man 小题2:From the sentence “Years later, my life changed a lot.” we can guess that _____. A.the writer didn’t get Christmas gifts any more. B.the writer became rich. C.the writer didn’t like Christmas gifts at all. D.the writer hoped to help more orphans. 小题3:The writer was so _____when she got a Christmas gift. A.sad B.bored C.tired D.happy 小题4:Which of the following is WRONG according to the passage? A.The writer’s family was very poor when she was a child. B.The writer wanted to do something special for the old people at Christmas. C.The three women taught the writer how to help others. D.The writer and her friends invited 125 orphans to come to the Christmas party. 小题5:What’s the best title for the passage? A.A special Christmas B.How to choose Christmas gifts. C.Three kind women. D.My first Christmas.
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参考答案:
举一反三
【简答题】测定血液中Ca 2+ 含量。取样5mL,将其中Ca 2+ 沉淀为CaC 2 O 4 ,然后将沉淀定量溶解于H 2 SO 4 中,并用KMnO 4 溶液滴定测其含量。若滴定用标准溶液浓度为c(KMnO 4 )=0.2500mol·L -1 ,消耗5.75mL,求每100mL血液中Ca 2+ 的毫克数。
【多选题】阿司匹林与吗啡的镇痛作用有哪些区别( )
A.
吗啡对钝痛、锐痛均有效,而阿司匹林对中等程度钝痛有效
B.
吗啡镇痛部位在中枢,阿司匹林在外周
C.
吗啡产生欣快感,阿司匹林则否
D.
二药均用于口腔小手术后疼痛
E.
二药均能抑制呼吸中枢
【单选题】下面不属于传感器的一项是()。
A.
冷却液温度传感器
B.
空气流量计
C.
节气门位置传感器
D.
喷油器
【多选题】阿司匹林与吗啡的镇痛作用有哪些区别:
A.
吗啡产生欣快感,阿司匹林则否
B.
二药均用于口腔小手术后疼痛
C.
吗啡对钝痛、锐痛均有效,而阿司匹林对中等程度钝痛有效
D.
吗啡镇痛部位在中枢,阿司匹林在外周
E.
二药均能抑制呼吸中枢
【单选题】某厨房购进胡萝卜20千克,其进货单价为4元/千克,去皮后得到净胡萝ト16千克,则净胡萝卜的单位成本为( )
A.
4元/千克
B.
5元/千克
C.
6元/千克
D.
4.5元千克
【单选题】下列大气条件中,不属于流量计检定环境条件的是()。
A.
温度一般为15-35°C
B.
海平面空气压力一般为101325帕(1013.25毫巴或760毫米汞柱)
C.
相对湿度一般为45-75%
D.
大气压力一般为86-106kpa
【单选题】将Ca2+ 沉淀为CaC2O4沉淀,用酸溶解,再用KMnO4标准溶液直接滴定生成的H2C2O4,从而求得Ca的含量。所采用的滴定方式是
A.
沉淀滴定法
B.
氧化还原滴定法
C.
直接滴定法
D.
间接滴定法
E.
以上均不是
【简答题】已知:一根l/d=10的金属柱体,从加热炉中取出置于静止空气中冷却。 求:从加热冷却的观点,柱体应是水平放置还是垂直放置(设两种情况下辐射散热相同)?估算开始冷却的瞬间在两种放置的情形下自然对流冷却散热量的比值。两种情形下的流动均为层流(端面散热不计)。
【多选题】多功能面板包括( )等功能。
A.
各种实用程序
B.
插件
C.
动力学
D.
以上答案都正确
【判断题】Chemdraw界面出现时会出现一个浮动的图形工具板,该工具板包括选区、键型、橡皮、文本、模板等多种功能。
A.
正确
B.
错误
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