单项选择题：如图7.2-54，已知电路在t=0s时刻和t=1s时刻出现两次换路。如果R1=R2=

题型：单项选择题

China is the biggest market in the world, and many countries such as Germany, the USA, the UK and Russia do a lot of business in China. Let’s have a look at some important tips to help you be successful when dealing with these nationalities,

First, you must be punctual(准时的) with Germans. Even 5 minutes late makes a bad impression. Being punctual is also very important in the USA. In the UK, it’s important to be punctual for business meetings, but nobody expects you to be on time for a social event. Half past seven really means a quarter to eight, or even eight o’clock! With Russians, you should always be on time, though it is not unusual for them to be one or even two hours late!

It is best to dress formally and wear dark colours when you meet people from all the four countries. In Russia, designer clothes are very common.. Don’t be surprised if you go to an office in the UK on a Friday and find everyone wearing jeans. Many companies have "dress down Friday", when people wear casual (随便的) clothes.

In Germany, first names are only used by family members and close friends, so be prepared to use titles and last names. In the USA you will usually be invited to use first names almost immediately. The British are quite informal and using first names in business is more and more common, especially among younger people. In Russia, however, nobody uses first names, so use titles and last names.

In conversation, the British and the Americans value humour, and both like to talk about sport. The weather is also a good topic of conversation with the British and the Americans, but avoid talking about politics. In Russia, say positive (积极的)things about their country, but avoid making complaints（抱怨）. The Germans, however, prefer to get straight down to business!

So, use these tips, and you will be on your way to a successful international business career!

小题1:Which color should you NOT wear when meeting a person from the USA?

A．Dark blue.

B．Gray.

C．Black.

D．White.小题2: All of the following statements are true EXCEPT ________.

A．you can say something funny when you talk to an American

B．you can use his first name when you talk to an Englishman

C．you must be on time when you meet people from each of the four countries

D．people wear whatever they like on Friday in some companies in the UK小题3:When you talk to a Russian, you can ________.

A．complain about something

B．say something negative about his country

C．say something good about his country

D． point out some disadvantages in politics小题4: The tips in this passage are probably given to people from ______.

A．China

B．the USA

C．Germany

D．the UK

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如图7.2-54，已知电路在t=0s时刻和t=1s时刻出现两次换路。如果R1=R2=

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