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【单选题】
在1,4-苯二氮卓类结构的1,2位上并入三唑环,生物活性明显增强,原因是什么?()A.
药物的亲水性增大
B.
药物与受体的亲和力增强
C.
药物的极性增大
D.
药物对代谢的稳定性及对受体的亲和力均增大
E.
药物对代谢的稳定性增强
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【简答题】The cat looked very well. It was rather thirsty. It drank half a bottle of milk.
【简答题】A．Parents' scolding children on videotape. B．Parents' ignorance of children in class. C．Parents' drug abuse with children. D．Parents' ill-treatment on children.
【单选题】_____ close parents are to their children has a strong influence on the character of the children. [ ]
A.
That
B.
What
C.
Where
D.
How
【单选题】属品种经营型,其单位面积投资成本略低,生产周期较短,因此相对较易适应市场。行业内的大多数苗农均集中在这一领域,低质及同质化竞争激烈,供应商的议价能力较弱。但因其种类繁多,产品间的替代效应明显,购买者可因此压价,如无新品种和新技术则很难规模发展。这是对哪种产品结构经营类型的描述?
A.
野生资源收集贸易型
B.
大中规格乔木生产经营型
C.
小乔木及花灌木生产经营型
D.
地被花卉生产经营型
【单选题】How close parents are to their children ________ strong influence on the character of the children. [ ]
A.
have
B.
having
C.
has
D.
to have
【简答题】这是哪种展位类型?
【单选题】It was rather____ of you to have forgotten the appointment.
A.
thoughtful
B.
thoughtless
C.
doubtful
D.
doubtless
【简答题】A．Most parents in Britain smack their children. B．Very few parents smack their children every day. C．Many parents fail to see things from the child's point of view. D．If children misbehave, they have ...
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