根管最狭窄处常常位于（） A.约距根尖2mm处 B.约距根尖孔2mm处 C.约距根尖

关于慢性支气管炎的发病因素，以下哪一项是错误的

A．呼吸道局部防御功能和免疫功能低下
B．植物神经功能失调
C．呼吸道粘液分泌功能减退
D．呼吸道粘液分泌功能亢进
E．遗传易感性

维特鲁威所著的（）一书是罗马建筑技术的总结，是西方设计实务的第一步系统的完整的著作。

A.《建筑十书》

B.《天工开物》

C.《园治》

D.《考工记》

阅读理解。

     Is learning a foreign language ever easy? Yes. If you are five and move to another country, you will

quickly pick up the language. But what about for the rest of us who are no longer five, and need to be

polite when traveling for business or for pleasure? I think that answer is also yes. Language learning can

be easy if you don't want or need to learn too much. 

    The key to successful language learning in my mind is not to set the goal too high. It is rather like

running. Even if you run twice a week, you don't necessarily want to be able to run a marathon. You

might just want to maintain a level of fitness. I think the same can be true for language learning.

     Let's get back to the goal. If you decide to learn ten words in a foreign language before visiting the

country, you know that you will manage to do this. However, if you decide to attain conversational

fluency, unless you are an exceptionally talented individual, you will probably fail and give up in disgust.

     It is also far easier to start learning a foreign language than to finish. In other words, the better you

are, the slower it can be to improve, because you will get stuck with grammar, making sentences,

learning less common words, etc. If you are only trying to learn a few foreign words and phrases, you

will enjoy faster progress, have more fun, and won't have to spend too much time. 

    The idea of learning only a few hundred words in a language, and then stopping, isn't the usual

approach to language learning, but it can be a very rewarding and entertaining activity.

1. In the writer's opinion, it is easy for adults to learn English if _____. [ ]

A. they are especially talented individuals

B. they don't want or need to learn too much

C. they have to spend a lot of time on it

D. they have a chance to go abroad

2. The writer intends to express that learning only a few hundred words in a language, and then

    stopping, _____. [ ]

A. is the usual method of learning a language

B. is of no use for learning a language

C. may cause a lot of mistakes while traveling

D. can be rewarding and entertaining

3. The writer believes that if you want to be good at a foreign language, you will probably _____. [ ]

A. forget your own goals

B. become a gifted language learner

C. get tired of learning it

D. reach your learning goal in advance

4. The best title of this passage would be _____. [ ]

A. Easy Language Learning

B. Hard Language Learning

C. Fluency in a Foreign Language

D. A Method of Language Learning

处方用药与临床诊断不相符

阿托品用于伴有青光眼患者

A．有禁忌证用药
B．超适应证用药
C．撒网式用药
D．盲目联合用药
E．过度治疗用药

以下不属于进货管理的目标的是（）。

A.保量

B.保质

C.保安全

D.操作简单