计算题：如正序电压继电器的返回系数要求不大于1.07，现有一继电器启动电压U1为89

糖尿病微血管病变的病理特点是（）

A.毛细血管的动脉粥样硬化管腔狭窄

B.毛细血管的基底膜增厚，PAS染色阳性

C.毛细血管的微血栓形成血流速慢

D.毛细血管的钙化通透性降低

E.毛细血管的内皮细胞受损

药品储存养护工作应贯彻的原则是

A．分类保管

B．色标管理

C．预防为主

D．重点养护

E．质量检查

运动神经元病的神经电生理检查中，错误的是

A．肌电图呈典型神经源性改变

B．静息状态下可见纤颤电位、正锐波

C．肌电图呈肌源性改变

D．神经传导速度正常

E．可见有束颤电位

阅读理解。

     Saying "thank you" is probably the first thing most of us learn to do in a foreign language. After all,

we're brought up to be polite, and it is important to make a good impression upon other people-especially across national divides.

     So, what exactly are you supposed to say when "thank you" is only the 20th most popular way to

express gratitude? According to a recent survey, 19 other ways of expressing appreciation finished ahead of "thank you" in a poll of 3,000 people.

     Pollsters(民测调查员) found almost half of those asked preferred the more informal "cheers", while

others liked to use such expressions as "ta", "great" and "nice one".

     So, just what is the appropriate form of words to express your thanks?

     Fortunately, the clue is in the language itself. "Cheers", despite its popularity, is considered an

informal way to say thank you - and this is a definite clue as to when you can best use it.

     For instance, when going for a drink with friends, a smile and a "cheers" by way of thanks is not only

appropriate to the situation, it is also culturally accurate.

     "Ta", originated from the Danish word "tak", was the second-most popular expression of thanks, and

is also commonly used in informal situations, along with phrases such as "nice one", and "brilliant".

Interestingly, one word that didn't make it into the top 20 was "thanks", Thank you is shorter, more

informal cousin.

     "Thanks" can be useful, as it is able to bridge the divide between the formality of "thank you" and the

downright relaxed "cheers".

     Certain words can double as an expression of thanks as well as delight. Again, the words themselves

offer the clue as to when best to use them.

      For example, words like "awesome", "brilliant" and "you star" featured highly in the new poll and they

can hint at both your pleasure at someone's action, as well as serving to express your thanks. If you are

on the receiving end of a "new" thank you, you can respond with a simple "no problem", or "sure".

     Of course, in certain circumstances, a simple wave, nod or smile may be appropriate. For instance, if

a car driver slows down to let you cross the road, simply raising your hand in acknowledgement is enough to show that you appreciate the driver's consideration.

      Sometimes, formality is necessary, and "thank you" is still the best choice in such situations. But students should not worry about when exactly to use certain expressions.

     Many people in Western countries are worried that good manners are in decline. People are tired of

seeing their acts of kindness and service pass without comment. So don't think your "thank you" is clumsy or awkwardly formal. The chances are, if you said "thank you", you made someone's day. You star.

1.We can tell from the results of the poll that _______.

A. people are unconcerned about politeness nowadays.

B. "thank you" remains the best expression of gratitude.

C. there is a variety of expressions of appreciation.

D. there are more formal expressions than informal ones.

2. According to the passage, which is an appropriate response to "awesome" or "brilliant"?

A. Thanks.  

B. Sure.          

C. Nice one.       

D. Cheers..

3. In the last paragraph the author encourages people to           .

A. show their gratitude to others.

B. behave themselves well.

C. continue their acts of kindness.

D. stop worrying about bad manners.

4. Which of the following can serve as the best title of this passage?

A. How to Appear More Polite.

B. Ways to Show Gratitude.

C. Never hesitate to Say "Thank You".

D. Good Manners in Decline!

每张处方罂粟壳的最大量是（）

A.9g

B.18g

C.27g

D.36g

E.45g