제가 너무 insertion 문제만 나오면 어떻게 손을 써야될 지 모르고 진땀만 흘리고 있습니다..
아래 문장이 A에 들어가야하는데 어떻게 실마리를 잡아야되는지 좀 도와주세요ㅠㅠ 어떻게 추리해서 근거를 찾으시는지 도움 부탁드립니다..insertion문제만 나오면 시간을 너무 길게 잡아먹고 힘들어요ㅠ
<Because humans had built up this knowledge as hunter-gatherers, it is logical to conclude that over time they would have become extremely efficient.>
How did it come about that farming developed independently in a number of world centers (the Southeast Asian mainland, Southwest Asia, Central America, lowland and highland South America, and equatorial Africa) at more or less the same time? Agriculture developed slowly among populations that had an extensive knowledge of plants and animals. Changing from hunting and gathering to agriculture had no immediate advantages. To start with, it forced the population to abandon the nomad's life and become sedentary, to develop methods of storage and, often, systems of irrigation. While hunter-gatherers always had the option of moving elsewhere when the resources were exhausted, this became more difficult with farming. Furthermore, as the archaeological record shows, the state of health of agriculturalists was worse than that of their contemporary hunter-gatherers.