问题 单项选择题

属于吗啡喃类合成镇痛药的是()

A.盐酸丁丙诺啡

B.盐酸纳洛酮

C.酒石酸布托啡诺

D.盐酸美沙酮

E.盐酸哌替啶

答案

参考答案:C

解析:

盐酸纳洛酮的结构中含有羰基;盐酸丁丙诺啡的结构中17位氮上有环丙甲基;盐酸美沙酮由于成瘾性较小,所以临床上可作为戒毒药品;酒石酸布托啡诺属于吗啡喃类合成镇痛药。

单项选择题
单项选择题

Now which are the animals really to be pitied in captivity First, those clever beings whose lively urge for activity can find no outlet behind the bars of the cage. This is most conspicuous, even for the uninitiated, in the case of animals which, when living in a free state, are accustomed to roaming about widely. Owing to this frustrated desire, foxes and wolves housed, in many old-fashioned zoos, in cages which are far too small, are among the most pitiable of all caged animals.
Though pinioned swans generally seem happy, under proper care, by hatching and rearing their young without any trouble, at migration time things become different: they repeatedly swim to the lee side of the pond, in order to have the whole extent of its surface at their disposal, trying to take off. Again and again the grand preparations end in a pathetic flutter of their half wings ; a truly sorry picture !
This, however, rarely awakens the pity of the zoo visitor, least of all when such an originally highly intelligent and mentally alert animal has deteriorated, in confinement, into a crazy idiot, a very caricature of its former self. Sentimental old ladies, the fanatical sponsors of the societies for Prevention of Cruelty to Animals, have no compunction in keeping a grey parrot in a relatively small cage or even chained to a perch. Together with the large corvines, the parrots are probably the only birds which suffer from that state of mind, common to prisoners, namely, boredom.

What does the author say about sentimental old ladies

A.They do not care about animals.

B.They hate making animals suffer.

C.They enjoy making animals suffer.

D.They do not realize the consequences.