属于二磷酸腺苷P2Y12受体阻断剂的是（） A.阿司匹林 B.氯吡格

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问题单项选择题

属于二磷酸腺苷P2Y12受体阻断剂的是（）

A.阿司匹林

B.氯吡格雷

C.替罗非班

D.奥扎格雷

E.前列环素

答案

参考答案：B

解析：

二磷酸腺苷P2Y12受体阻断剂：目前，临床使用的P2Y12阻断剂有噻氯匹定、氯吡格雷、阿那格雷、普拉格雷、依诺格雷、替格雷洛和坎格雷洛。替罗非班为一种高选择性非肽类血小板膜糖蛋白Ⅱb/Ⅲa受体阻断剂，可减少血栓负荷和继发的远端微循环栓塞，改善心肌组织水平的灌注。

完形填空

完形填空。
Some people say they have an answer to the problems of car crowding and pollution. In many cities, hundreds of people ride bikes to work every day. In New York City, some bike riders have even 1 a group: Bike for a Better City. They say if 2 people rode bikes to work, there would be fewer cars and less dirty air. For several years this group has tried to get help for bike riders. They want to have special roads for bikes only, because when bike riders must use the same roads 3 cars, there may be accidents. Bike for a Better City feels if there were bike roads, more people would use bikes. But 4 bike roads have been ready yet. Not everyone thinks it is a good5 . Divers don't like it, and some shop owners don't, 6 . And most people live 7 far from the city to travel by bike. Still, 8 has been done about it. On Saturdays and Sundays, the largest open park in New York is 9 to cars, and the roads may be used by bikes only, but the group still says this is not enough and goes on fighting 10 bike roads.
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单项选择题

（）是农村的对称，指那些人口集中稠密，工商业发达，居民以非农业人口为主，在政治、经济、文化等方面处于中心地位的区域。

A.城

B.市

C.城市

D.市政府