[填空题]Without the ______ (invent) of writing, a man would be forced to remember so many things which he can write down or find in a book.

[单项选择]How man first learnt to invent words is unknown; in other words, the origin of language is a mystery. All we really know is that man, unlike animals, somehow invented certain sounds to express thoughts and feelings, actions and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to stand for those sounds, and which could be written down. Those sounds, whether spoken or written in letters, we call words.
The power of word, then lies in their association with the things they bring up before our minds. Words became filled with meanings for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something to us increase.
Great writers are those who not only have great thoughts but also express these thoughts in words that appeal powerfully to our minds and emotio
A. clearly explained in this passage
B. a question that was difficult to answer
C. a matter that can not be or has not been explained or understood
D. a problem already solved

[单项选择]

Instead of writing everything down in a linear manner, the mind mapper ______.
A. creates a complicated map in his brain that may have a similarity to a pipe line
B. works out a way of taking down the most important information
C. produces a graphic "map", which may be similar to networks in the brain

[单项选择]What does the man think of his writing
A. Writing will not be easy.
B. Writing will be less difficult.
C. Writing has been boring.
D. Writing has been enjoyable.