[单项选择]

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines—a never-ending flood of words. In (41) a job or advancing in one, the ability to read and comprehend (42) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (43) readers. Most of us develop poor reading (44) at an early age, and never get over them. The main deficiency (45) in the actual stuff of language itself—words. Taken individually, words have (46) meaning until they are strung together into phrases, sentences and paragraphs. (47) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (48) words or passages. Regression, the tendency to look back over (49) you have just re
A. our 
B. your 
C. their 
D. sucha