题目

Five or six years ago, I attended a lecture on the science of attention. A professor who conducts research over in the medical school was talking about attention blindness, the basic feature of the human brain that, when we concentrate on one task, causes us to miss just about everything else. Because we can't see what we can't see, our lecturer was determined to catch us in the act. He had us watch a video of six people tossing (投掷) basketballs back and forth, three in white shirts and three in black, and our task was to keep track only of the tosses among the people in white. The有关生物进化的说法，错误的是（ ）A. 原始的单细胞藻类是地球上最早出现的植物B. 生物进化的总趋势：从复杂和简单，从高等到低等C. 化石是研究生物进化的最直接证据D. 达尔文的自然选择学说较为科学地解释了生物进化的原因