问题 单项选择题 B型题

升高血糖,减弱其降血糖作用的药物是()

A.氯霉素

B.双香豆素

C.氯塞嗪

D.磺胺嘧啶

E.利福平

答案

参考答案:C

解析:与血浆蛋白结合率高的药物能与磺酰脲类竞争血浆蛋白的结合,从而使游离型药物增加,如双香豆素;肝药酶抑制剂可减慢磺酰脲类药物的代谢而延长其半衰期,如氯霉素;肝药酶诱导剂可加速磺酰脲类药物的代谢而减弱其降血糖作用,如利福平;噻嗪类和强利尿药以及皮质激素类可加速磺酰脲类药物代谢而减弱其降血糖作用。

单项选择题
阅读理解

The bee,like the ant,is a social insect(昆虫).Bees live in large groups in box-like houses called hives or beehives.Every bee does a certain job that helps the other members of the group.In a beehive there live three kinds of bees:the queen bee,the male bees and the worker bees.The worker bees are born to be hard-working,flying from flower to flower collecting nectar(花蜜),which is made up mostly of sugar mixed with water.Bees draw this nectar into their honey bags where some sort of liquid in their bodies turns the nectar into honey.The newly made honey flows slowly from the bees’ underside and then is stored in small cells in the hive.When the weather turns cold,and there are no flowers for them to collect nectar,the stored honey will see them through the winter months.People who raise bees and depend on bees for a living are thought of as beekeepers.A bee-keeper usually keeps hundreds of hives,and removes honey from hives and keeps it in glass bottles or jars.Honey usually appears as a clear golden-colored liquid,but this lies in the sort of flowers from which bees have taken the nectar.

66.The best title of this passage is_______.

A.The Social Habits of Bees                              B.Three Kinds of Bees

C.The Production of Honey                               D.Bee Keepers’ Work

67.Bees are regarded as social insects because they_______.

A.form themselves into a good organization

B.have learned something from human society

C.need beekeepers to arrange their jobs

D.are born to work hard

68.The color of honey in its final stage depends on the_______.

A.type of flowers which the nectar is taken from

B.amount of sugar the beekeeper gives the bees

C.season in which the nectar is collected

D.quantity of water the bees are able to drink

69.Worker bees are always busy collecting nectar in order to_______.

A.help beekeepers to earn money from honey

B.turn it into honey

C.have something to eat in winter months

D.please the queen bee at the hive

70.During the course in which nectar change into honey_______.

A.water and sunlight are necessary conditions

B.some special liquid inside bees must be in the presence

C.many complex(复杂的)chemical changes will take place

D.worker bees have to bring up what they collected into their hive