在总账系统中填制记账凭证时，输入的科目编码必须在建立科目时已经定义，并且必须是总账科目编码。（)

anguage is used.

A．in which

B．at which

C．on which

D．in that

A、the indented style

B、the full-block style

C、the modified block style

D、the improved style

Government reports examination compositions legal documents, and most business letters are the main situations ________formal language is used.

A) in which B) at what C) on which D) in that

ters are the main situations ________ formal language is used.

A) in which

B) on which

C) in that

D) at what

native (本国的) language is the most important one, as it is their first language. For many people it is even their only language all their lives. But English is the world's most widely used language.

As a native language, English is spoken by nearly three hundred million people: in the U. S. , Eng land, Australia and some other countries.

For people in India and many other countries, English is often necessary for business, education, information and other activities. So English is the second language there.

As a foreign language, no other language is more widely studied or used than English. We use it to listen to the radio, to read books or to travel. It is also one of the working languages in the United Nations and is more used than the others.

The native language is a person's ______ language.

A．first

B．only

C．one

D．foreign

e the main situations ______ formal language is used.

A．in which

B．at what

C．on which

D．in that

native (本国的) language is the most important one, as it is their first language. For many people it is even their only language all their lives. But English is the world's most widely used language.

As a native language, English is spoken by nearly three hundred million people in the U. S. A., England, Australia and some other countries.

For people in India and many other countries, English is often necessary for business, education and other activities (活动). So English is the second language there.

As a foreign language, no other language is more widely studied or used than English. We use it to listen to the radio, to read books or to travel. It is also one of the working languages in the United Nations and is more used than the others.

The native language is a person's ______ language.

A．first

B．only

C．foreign

Q: What made English a widely used language？

W: Hi, Leo. Why do you say English will become the world language？

M: Well, for one thing, it's so commonly used. The only language that is used by more people is Chinese.

W: Why is English spoken by so many people？

M: It's spoken in many countries of the world because of the British Empire. And now, of course, there's influence of America as well.

W: Many students find English a difficult language to learn.

M: Oh, all languages are difficult to learn. But English does have two great advantages.

W: What are they？

M: Well, first of all, it has a very international vocabulary. It has many German, Dutch, French, Spanish and Italian words in it. So speakers of those languages will find many familiar words in English. In fact, English has words from many other languages as well.

W: Why is that？

M: Well, partly because English speakers have travelled a lot. They bring back words with them, so English really does have an international vocabulary.

W: And what's the other advantage of English？

M: It's that English grammar is really quite easy. For example, it doesn't have dozens of different endings for its nouns, adjectives and verbs, not like Latin, Russian, and German for example.

W: Why is that？

M: Well, it's quite interesting actually. It's because of the French. When the French ruled England, French was the official language and only the common people spoke English. They try to make the language as simple as possible, so they made the grammar easier.

A.It has words from many languages.

B.Its popularity with the common people.

C.The influence of the British Empire.

D.The effect of the Industrial Revolution.