scientists have recently discovered what could be the largest and oldest living organism on Earth. A giant fungus that is an interwoven filigree of mushrooms and root like tentacles spawned by a single fertilized spore some 10000 years ago and extending for more than 30 acres in the soil of a Michigan forest.

　　A extending

　　B extends

　　C extended

　　D it extended

　　E is extending

　　译文：科学家最近发现地球上最大的真菌是在Michigan森林中一种被单独受精的孢子所产生的交织混合的蘑菇金银丝和和根状腺毛并且主动向周边土壤延伸30亩。

　　分析：本题中出现了and本来要求前后形式对称。但基于客观事实,产生是被动的而周边延伸却是主动做出的，所以本题选的是extending.虽然形式上不对称.但功能上却是相同的.因为都是分词。

　　四)含义单一

　　重点考查两个题型：

　　1. 从句并列使用相同连词且都补出

　　例:It is well known in supermarket industry that how items are placed on shelves and the frequency of inventory turnovers can be crucial to profits.

　　A the frequency of inventory turnovers can be

　　B the frequency of inventory turnovers is often

　　C the frequency with which the inventory turns over is often

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