A.weakens
B.benefits
C.explains
D.supports
二、任务型读写
(2012铜陵第三中学高三月考)阅读下面短文,根据所读内容在表格中的空白处填入恰当的单词。注意:每个空格只填一个单词。
Farmers and gardeners have long used greenhouses to extend the growing season in cold weather.Now,hoop houses are gaining popularity.Hoop houses are sometimes called a temporary greenhouse or passive solar greenhouse.
Some hoop houses are rounded;others are shaped more like a traditional house.A hoop house is basically a metal frame covered with plastic or other all-weather material.A common design looks like a high tunnel.Unlike a greenhouse,which uses a heating system,a hoop house is heated by the warmth of the sun.
Now,the United States Department of Agriculture has announced a program to help farmers who want to build hoop houses.The department has been supporting a project in Michigan.That state has a short growing season.As part of the research project,nine farmers were given materials and trained how to build and use a hoop house.The results showed that well-managed hoop houses can grow high-quality crops.
However,crops are not the only things that grow well.The research found that weeds grow faster in a hoop house.Weeding,seeding and watering requires at least as much work as crops grown in the open air.The researchers also advise growers to add compost(堆肥)material to the soil in hoop houses to build nutrients.
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