标题: 2001年5月阅读47/48题 [打印本页] 作者: dydingding 时间: 2003-11-2 18:11 标题: 2001年5月阅读47/48题 47. The phrase “the other” in line 17 refers to another (A) annual cycle (B) glacial lake (C) layer of sediment (D) season Typically, present-day varves show two-layered annual cycle, one layer corresponding to the rapid ice melting and sediment transport of the summer season, andthe other, finer-grained, layer corresponding to slower winter deposition. 这题答案我选择A, 给的是D
48. According to the passage, the presence of dropstones indicates that (A) the glacial environment has been unusually server (B) the fine-grained sediment has built up very slowly (C) there has been a global ice age (D) coarse rock material has been carried great distances
These fine-grained, layered sediments even contain occasional large pebbles or “dropstones,” a characteristic feature of glacial environments where coarse material is sometimes carried on floating ice and dropped far from its source, into otherwise very fine grained sediment. Glacial sediments of about the same age as those 这题为什么选择D, 我觉得应该是C