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  3. Bananas are widely believed to grow on trees: this is incorrect. The banana is a plant which finishes all its growth in one year

Bananas are widely believed to grow on trees: this is incorrect. The banana is a plant which finishes all its growth in one year

admin2009-07-15  82
问题     Bananas are widely believed to grow on trees: this is incorrect. The banana is a plant which finishes all its growth in one year, reaching a height of 30 feet. Bananas have a subterranean (地下的) stem from which come large, green leaves. The plant reaches its maturity in about 18 months.
    As the bunches of bananas mature and the fruit develops, they can be propped (支撑) up with poles and covered with blue polyethylene (聚乙烯) bags. These prevent injury, protect against the frost, and speed ripening by increasing heat and humidity.
    Once the bananas plant has produced its fruit, the mother plant dies and is replaced by pups (sucker plants). These grow next to the parent and make a new generation of banana plants.
选项 A、Beliefs About Banana Plants
B、The Growth of a Banana Plant to Maturity
C、A Year in the Life of a Banana Plant
D、Bananas Plants: from Birth to Maturity
答案D
解析 本文讲的是香蕉这种植物从开始生长到成熟的整个过程，故选D。
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