Linda loves her dog Davy. They went to N

题型:阅读理解

问题:

Linda loves her dog Davy. They went to New York City last Saturday.

While Linda was buying a newspaper at the train station, the dog got out of his box and ran away. The station was crowded and Linda couldn't see Davy anywhere. When Linda shouted his name, some people looked at her but Davy didn't come. Then she called the police. While she was talking on the telephone, Davy met another dog outside the station. While the police were coming,Linda walked around the station and called Davy' s name. She didn't think about looking outside the station. Finally, a little boy said to her, "Did you look outside? I saw a big black dog when I came in. "When Linda finally saw Davy, he was jumping and running with another dog. There was a police officer next to them. The police officer said to Linda, "I think my dog found your dog."

小题1:What was Linda doing when Davy ran away?

小题2:How was the station?

小题3:What did Linda do when she couldn't find her dog?

小题4:Who gave Linda the tip (提示) to find Davy?

小题5:Who found Davy finally?

考点:人物传记类阅读故事类阅读
题型:阅读理解

防党、台党参的正名是()

A.党参

B.蝉蜕

C.藜芦

D.浙贝

E.柴胡

题型:阅读理解

下表是元素周期表的一部分, 针对表中的①~⑩种元素,填写下列空白:

   主族

周期

ⅠAⅡAⅢAⅣAⅤAⅥAⅦA0族
1  
2     
3   
4       
 

(1)写由上述元素组成的分子中电子总数为10的分子(至少两种):              

(2)比较:②、③、④、⑤的第一电离能:              (写元素符号)。

(3)在最高价氧化物的水化物中,酸性最强的化合物的分子式是               ;碱性最强的化合物的电子式是:                         

(4)具有两性的最高价氧化物是                  (填化学式);写出其与氢氧化钠溶液反应的离子方程式:                                                

(5)下表为原子序数依次增大的短周期元素A~E的第一到第五电离能数据。

电离能I(eV)AB C D E
I111.313.65.27.66.0
I224.435.149.315.018.8
I347.954.971.680.128.4
I464.577.498.9109.2112.0
I5392.1113.9138.3141.3153.7
 

试回答:表中可能为非金属元素的是               (填字母);若D、E为同周期相邻元素,表中D比E的第一电离能略大,其原因是                            

题型:阅读理解

下图所示是分离混合物时常用的仪器,回答下列问题:

(1)写出仪器C、E的名称______、______

(2)分离以下混合物应该主要选用使用什么仪器?(填字母符号)

粗盐和泥沙:______  食用油和酒精:______   花生油和水:______

(3)下列关于仪器的使用说法正确的是______

A.A仪器可以用酒精灯直接加热

B.B仪器可以用于向酒精灯中添加酒精

C.C仪器在放出液体时应打开上边的瓶塞

D.在实验室应用D仪器进行实验时要不断用玻璃棒搅拌

E.E仪器中水的流向是上进下出

(4)若向C装置中加入碘水和少量CCl4,震荡后静置,会观察到什么现象?______

(5)若粗盐溶液中仅含有少量的CaCl2,某学生用Na2CO3使Ca2+离子转化为碳酸钙沉淀,确认Ca2+已沉淀完全的实验方法是______;若要得到纯净的沉淀物,需要对其洗涤,写出洗涤沉淀的方法______.

题型:阅读理解

患者妊娠数月,小便频数淋沥,灼热刺痛,量少色深黄,形体消瘦,午后潮热,手足心热,心烦不寐,大便不畅,舌红苔薄黄而干,脉细滑数。治疗应首选()

A.导赤散

B.益气导溺汤

C.加味五淋散

D.知柏地黄汤

E.八正散

题型:阅读理解

《煤矿安全规程》规定:使用中的单绳缠绕式绞车专为提升物料用钢丝绳的安全系数不得低于6。

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