[請益] 黃金閱讀THE ARRIVAL OF PLANT LIFE IN HAWAII

看板TOEFL_iBT (TOEFL_iBT托福)作者miraculouss (也無風雨也無晴)時間16年前 (2010/05/09 16:38)推噓2(2推 0噓 5→)

留言7則, 3人參與討論串1/1

Paragraph 2: Spores light enough to float on the breezes were carried thousands of miles from more ancient lands and deposited at random across the bare mountain flanks. A few of these spores found a toehold on the dark, forbidding rocks and grew and began to work their transformation upon the land. Lichens were probably the first successful flora. These are not single individual plants; each one is a symbiotic combination of an algae and a fungus. The algae capture the Sun's energy by photosynthesis and store it in organic molecules. The fungi absorb moisture and mineral salts from the rocks, passing these on in waste products that nourish algae. It is significant that the earliest living things that built communities on these islands are examples of symbiosis, a phenomenon that depends upon the close cooperation of two or more forms of life and a principle that is very important in island communities. 2. It can be inferred from paragraph 2 that the fungi in lichens benefit from their symbiotic relationship with algae in what way? ○The algae help the fungi meet some of their energy needs. ○The algae protect the fungi from the Sun's radiation. ○The algae provide the fungi with greater space for absorbing water. ○The fungi produce less waste in the presence of algae. 答案是A。我的問題是，從題目中怎麼導出A的答案呢？ The algae capture the Sun's energy by photosynthesis and store it in organic molecules. The fungi absorb moisture and mineral salts from the rocks, passing these on in waste products that nourish algae. 這兩句話，是說海藻產生光和作用並把能量儲存在有機分子。菌類從岩石吸收水分和礦物鹽。為什麼答案是A呢?? 3. Which of the sentences below best expresses the essential information in the highlighted sentence in the passage? Incorrect choices change the meaning in important ways or leave out essential information. ○Some of the earliest important examples of symbiosis-the close cooperation of two or more living things-occur in island communities. ○Symbiosis-the close cooperation of pairs or small groups of living organisms-is especially important in these island environments. ○The first organisms on these islands worked together closely in a relationship known as symbiosis, which is particularly important on islands. ○It is significant to note that organisms in the beginning stages of the development of island life cannot survive without close cooperation. （原句：It is significant that the earliest living things that built communities on these islands are examples of symbiosis, a phenomenon that depends upon the close cooperation of two or more forms of life and a principle that is very important in island communities.）我是選B，答案是C。不理解B和C有什麼不一樣XD 以上兩問題，請高手解惑。感恩 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.216.232.7