Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文: The dog has often been an unselfish friend to man. It is always grateful to its master. It helps man in many ways. Certain breeds of dogs are used in criminal investigations. They are trained to sniff out drugs and bombs. They help police to catch criminals. Some dogs are trained to lead blind people.
The dogs that help in criminal investigations are trained at a school called the Military Dog Studies branch of the US Air Force in Lackland, Texas, The dogs to be trained are selected by an air force team. This team visits large cities across the country to buy the dogs. They may buy dogs from private citizens for up to $750 each. Some citizens freely give their dogs. The dogs selected must be healthy, brave and aggressive. They must be able to fight back if they are attacked. The dogs chosen are between the ages of one and three. They are given a medical examination when they arrive at the school. Their physical examination includes X-rays and heart tests. The trainee dogs undergo the first stage of training when they arrive in Lackland. This is an 11-week course for patrol duty. After this course, the best dogs are selected to go on another 9-week course. They learn drag-sniffing or bomb-sniffing. After this course, the dogs axe ready for their jobs in the cities or on air force bases.
The training given to a drag-sniffing dog is different from that given to a bomb-sniffing dog. A drag-sniffing dog is trained to scratch and dig for the drugs when he sniffs them. A bomb-sniffing dog sits down when he finds a bomb. That is the alert for hidden explosives.
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A.Given by the local government.
B.Born by a large number of bitches.
C.Bought from different cities and villages.
D.Captured over grassland.
第1题
A.在酸性条件下,和亚硝酸钠与β-萘酚反应,显橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀 以下药物的鉴别反应是
盐酸普鲁卡因E.
第2题
A.在酸性条件下,和亚硝酸钠与β-萘酚反应,显橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀 以下药物的鉴别反应是
盐酸普鲁卡因E.
第3题
盐酸普鲁卡因在稀盐酸中与亚硝酸钠反应后,加碱性β-萘酚试液生成
A.白色沉淀
B.橙红色沉淀
C.红色溶液
D.刺激性气体
E.无色无味气体
第4题
盐酸普鲁卡因在稀盐酸中与亚硝酸钠反应后,加碱性β-萘酚试液生成
A.白色沉淀
B.橙红色沉淀
C.红色溶液
D.刺激性气体
E.无色无味气体
第5题
[101~102]
A.在酸性条件下,和亚硝酸钠与β-萘酚反应,显橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀以下药物的鉴别反应是
101.盐酸普鲁卡因
102.盐酸利多卡因
第6题
盐酸普鲁卡因
A、在酸性条件下,和亚硝酸钠与β-萘酚反应,呈橙红色
B、在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C、与硝酸反应,显黄色
D、加入三氯化铁试液,显紫红色
E、加入三氯化铁试液,生成赭色沉淀; 以下药物的鉴别反应是
第7题
根据以下内容,回答 130~132 题:
A.在酸性条件下,和亚硝酸钠与β-萘酚反应,呈橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀
以下药物的鉴别反应是
第 130 题 盐酸普鲁卡因()。
第8题
A.在酸性条件下,和亚硝酸钠与 β-萘酚反应,显橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀
第9题
盐酸普鲁卡因
以下药物的鉴别反应是
A、在酸性条件下和亚硝酸钠反应,然后碱性与β-萘酚反应,呈橙红色
B、在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C、与硝酸反应,显黄色
D、加入三氯化铁试液,显紫红色
E、加入三氯化铁试液,生成赭色沉淀
第10题
根据下列选项,回答 127~128 题:
A.在酸性条件下,和亚硝酸钠与?-萘酚反应。显橙红色
B.在碳酸钠试液中,与硫酸铜反应,生成蓝紫色配合物
C.与硝酸反应,显黄色
D.加入三氯化铁试液,显紫红色
E.加入三氯化铁试液,生成赭色沉淀以下药物的鉴别反应是
第 127 题 盐酸普鲁卡因
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