B.breed slowly in the stored harvest
C.survive in airtight plastic bags
D.multiply while the crop is in storage
3.How does “killer bean” come out? ()
A.The pesticide causes many deaths of bugs.
B.People eat beans that are infected by bugs.
C.Farmers use chemicals to kill bugs improperly.
D.Bugs ruin beans within a short time.
4.Which statement of the following is NOT true? ()
A.Insects in the bags will soon use up the air and then die.
B.The airtight plastic bags currently sold at the market do not last long.
C.The project provides the farmers with the bags for free at present.
D.What farmers can earn from the use of the bag is far more than they have to pay.
语篇解读:虫害一直是农民的心头大患,这不仅危害农作物的生长,还浪费了许多粮食。最新的农业科技给人们带来了福音,那就是用密封袋来保护农作物以远离虫害。
答案及剖析:1.A 主旨大意题。由第一段(主题段)及全文内容可知,一种密封塑料袋在不使用任何化学药品的前提下,能够保护农民的收成不受虫害影响。故Simple Bags Save the Harvest最能概括全文的中心。
2.D 推理判断题。由第二段的第二、三、四句内容可知,bruchids是一种在粮食储藏过程中繁殖很快的昆虫,它们能够在几个星期内长成成虫,产下40到60个甚至更多的虫卵。D项中multiply有“增加;繁殖”之意。
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