reconstructv.重建 gamma ray 伽马射线
electromagneticadj.电磁的coastern.托盘,垫子
A、can now make an invisible cloak of the same kind as he uses.
C、try to invent a device Similar in idea to the invisible cloak he uses.
2.What is true of microwaves?
B、Their wavelengths are longer than those of visible light.
D、They are visible to the human eye.
A、It is made of a special material with unusual ability.
C、Microwaves pass through it when they strike it.
4.What does the word coaster mean in the passage?
B、A vessel engaged in coastal trade.
D、A resident of a coastal area.
A、scientists have not found out how his cloak works.
C、the cloaking device works only for microwaves.
答案与题解:
1.C文章的第一段告诉我们,科学家还没有发明哈里波特使用的那种隐身衣,所以不能选 A;该段还告诉我们,科学家已制造了,一种装置,这种装置能使自身或置于其中的物体不被微波发现,所以C是正确选择,也就是说,科学家发明的隐形装置和哈里波特的隐身衣仅仅在概念上相同,这同时说明B和D是错误的选择。
3.B第四段第三句说,当微波到达装置表面时,very few bounce off。very few是几乎没有的意思,所以选择B。其他选择所述内容都可以很容易在该段中找到。
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