TPO9-3The Arrival of Plant Life in Hawaii夏威夷植物的到来
地衣、海藻、蕨类、苔藓、被子植物，植物是怎样到达夏威夷岛屿，本文用简洁凝练的语言为你娓娓道来。
1. The fungi absorb moisture and mineral salts from the rocks, passing these on in waste products that nourish algae. (细节题出处，理解二者间关系。)
2. It is significant that the earliest living thing that built communities on these islands are examples of symbiosis, a phenomenon that depends upon the close cooperation of two or more forms oflife and a principle that is very important in island communities. (句子简化题：不能遗漏同位语部分的重要信息点。)
3. Lichens helped to speed the decomposition of the hard rock surfaces, preparing a soft bed of soil that was abundantly supplied withminerals that had been carried in the molten rock from the bowels of Earth. (细节题出处，找准两个定语从句切分点。)
4. These plants propagate by producing spores–tiny fertilized cells that contain all the instructions for making a new plant–but the spore are unprotected by any outer coating and carry no supply of nutrient. Sosince the chances of survival for any individual spore are small, the plants have to produce many spores in order to propagate. Vast numbers of them fall on the ground beneath the mother plants. (文本插入题出处，体会插入句如何承上启下。)
5. Many millions of years after ferns evolved (but longbefore the Hawaiian Islands were born from the sea), another kind of flora evolved on Earth: the seed-bearing plants. This was a wonderful biological invention. (体会指代)
6. In the angiosperm the seeds are wrapped in an additional layer of covering. Some of these coats are hard–like the shell of a nut–for extra protection. Some are soft and tempting, like a peach or a cherry.(修辞目的题考点：概述与详述)
7. Remarkably resistant to the vicissitudes of ocean travel, they can survive prolonged immersion in saltwater when they come to rest on warm beaches and the conditions are favorable, the seed coats soften.
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