Why did you decide to read this, and will you keep reading to the end？ Do you expect to un

derstand every 【C1】______ part of it and will you remember anything about it in a fortnight's 【C2】______ ？ Common sense 【C3】______ that the answers 【C4】______ these questions depend on "readability" -whether the 【C5】______ matter is interesting, the argument clear and the 【C6】______ attractive. But psychologists are discovering that to 【C7】______ why people read-and often don't read-technical information, they have to 【C8】______ not so much the writing as the reader.

Even the most technically confident people often 【C9】______ instructions for the video or home computer in 【C10】______ of hands-on experience. And people frequently 【C11】______ little notice of consumer information, 【C12】______ on nutritional labels or in the small print of contracts. Psychologists researching reading 【C13】______ to assume that both beginners and 【C14】______ readers read everything put in front of them from start to finish. There are 【C15】______ among them about the 【C16】______ of eyes, memory and brain during the 【C17】______ . Some believe that fluent readers take 【C18】______ every letter or Word they see; others 【C19】______ that readers rely on memory or context to carry them from one phrase to another. But they have always assumed that the reading process is the same: reading starts, comprehension 【C20】______ , then reading stops.

【C1】

A．absolute

B．one

C．single

D．unique