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10.Popeye the Sailor first became a popular cartoon in the 1930s.The sailor in that cartoon ate lots of spinach to make him strong.People watched him,and they began to buy and eat a lot more spinach.Popeye helped sell 33percent more spinach than before!Spinach became a necessary part of many people's diets.Even some children who hated the taste began to eat the vegetable.
Many people thought that the iron in spinach made Popeye strong,but this is not true.Spinach does not have any more iron than any other green vegetable.
People only thought spinach had a lot of iron because the people who studied the food made a mistake.In the 1890s,a group of people studied what was inside vegetables.This group said that spinach had ten times more iron than it did.The group wrote the number wrong,and everyone accepted it.
Today,we know that the little iron there is in spinach cannot make a difference in how strong a person is.However,spinach does have something else which the body needs-folic acid.It is interesting to point out that folic acid can help make a person strong.Maybe it was really the folic acid that made Popeye strong all along.

25.Why did many people eat spinach after they saw Popeye the Sailor?A
A.They thought spinach made them strong.
B.They thought Popeye was funny.
C.Spinach had a lot of iron.
D.People liked folic acid.
26.A research group told people that spinachD.
A.made Popeye strong
B.was a green vegetable
C.had less iron than other green vegetables
D.had more iron than other green vegetables
27.The reading passage says that perhaps Popeye got his strength fromB.
A.iron
B.folic acid
C.spinach
D.exercise
28.Folic acid isA.
A.something in food
B.a vegetable
C.dangerous
D.a certain kind of spinach.

分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了介绍了菠菜使人强壮的秘诀,上世纪看过"大力水手"卡通影片让人们爱上菠菜,认为吃了菠菜就能像"大力水手"一样强壮,菠菜的销量剧增,连讨厌吃菠菜的小孩也爱上吃菠菜.人们认为由于菠菜中含有的大量的铁使他们强壮,然而在今天这些经证实是错误的,人们发现真正的原因是菠菜中的叶酸使人变得强壮.

解答 25.A.推理判断题.根据文章第一段"The sailor in that cartoon ate lots of spinach to make him strong.People watched him,and they began to buy and eat a lot more spinach"吃了不少的菠菜使大力水手变得强壮.人们看着他,他们开始购买和多吃菠菜;可知人们吃菠菜是因为认为菠菜使人强壮;故选A.
26.D.细节理解题.根据文章第三段"This group said that spinach had ten times more iron than it did"可知研究小组告诉人们菠菜含有比其他蔬菜多十倍的铁;故选D.
27.B.细节理解题.根据文章末段It is interesting to point out that folic acid can help make a person strong.Maybe it was really the folic acid that made Popeye strong all along.可知叶酸会给人提供能量,或许大力水手的力量就是由此而来的,故答案选B.
28.A.推理判断题.根据文章第四段spinach does have something else which the body needs-folic acid.可知folic acid(叶酸)是存在于菠菜中的,由此推断答案选A.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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