The above experiment shows that not all the

information which is received can be retained for even

a second. The information is taken in all right, andS1. ______

immediately thereafter, most of it is lost and can not

be recalled. Only a small part can be retained for

future use. Now this immediate-forgetting is not an

isolated phenomenon occurs only in the psychologicalS2. ______

laboratory. It is, rather, the fate of most of the

information which human beings are constantly

receiving. Information is taken in, and the bulk of

it vanishes within a second and so. On the whole, thisS3. ______

immediate-forgetting is advantageous. Most of the

information taking in during the daily round is ofS4. ______

momentary value only. It serves to keep us abreast of

the ever-changing relationships amongS5. ______

ourselves and our environment and, this service

rendered, its further retention would merely obstruct

the ongoing flow of our activities, It is necessaryS6. ______

to retain every minute detail of immediately past

circumstances; and indeed, if we did retain these

details this would deprive us to consider theS7. ______

detailed requirements of the present moment. In all of

life's activities, we take in, from one moment to the

next, a great deal of information which value isS8. ______

restricted to the moment of its intake. So it is

altogether an economy such information be forgottenS9. ______

immediately. It is an economy that is selected forS10. ______

more lasting retention be only those minimal

outstanding characteristics likely to be of future value.

【S1】