tpo 문제인데.. 이해가 잘 안가서요 ㅠ_ㅠ
Look at the four squares 【】 that indicate where the following sentence could be added to the passage. Where would the sentence best fit?
What, then, determines what proportion of the water stays and what proportion drains away?
Much of the water in a sample of water-saturated sediment or rock will drain from it if the sample is put in a suitable dry place. [ ] But some will remain, clinging to all solid surfaces. [ ] It is held there by the force of surface tension without which water would drain instantly from any wet surface, leaving it totally dry. [ ] The total volume of water in the saturated sample must therefore be thought of as consisting of water that can, and water that cannot, drain away.[ ]
The relative amount of these two kinds of water varies greatly from one kind of rock or sediment to another, even though their porosities may be the same. What happens depends on pore size. If the pores are large, the water in them will exist as drops too heavy for surface tension to hold, and it will drain away; but if the pores are small enough, the water in them will exist as thin films, too light to overcome the force of surface tension holding them in place; then the water will be firmly held.
저는 B를 택했고, 정답은 D입니다.
B 뒤의 surface tension이 질문의 답의 근거라고 생각했는데..
도움 부탁드립니다 *_*