练习:; ?2 w( c7 m! O: T5 d
1.Harry Potter is mentioned in the passage,because scientists5 R! _' Q" ^8 J8 M
Acan now make an invisible cloak of the same kind as he uses.# t% y3 x. Z6 M: g
Btry to make an invisible cloak of the same kind as he uses.# H* K J1 K9 Z3 v2 h3 G w7 ]+ a
Ctry to invent a device Similar in idea to the invisible cloak he uses./ `- j( V% X! c& O$ z
Dknow that it is possible to make an invisible cloak of the same kind.) @2 u+ H( w' O) ?5 n4 f: H
2.What is true of microwaves?- R; B; {3 U" C) x7 U
ATheir wavelengths are shorter than those of visible light.5 I/ k7 S! l- Q9 }% F0 {7 _6 I2 |" r
BTheir wavelengths are longer than those of visible light.
. J6 }& }5 ]8 L3 p2 c* ?) Y CThey are different from visible light as they are a kind of radiant energy.$ U- I' [# W/ R( }
DThey are visible to the human eye." X2 x% }, Q/ A% i2 }' D& ~
3.What is NOT true of the invisibility device?2 w1 a% Q8 D8 ?% ?$ f% f) _
AIt is made of a special material with unusual ability.
; p( ]5 R/ ]6 R* ^3 ]2 a S( { BMicrowaves bounce off it when they strike it. D9 _. i1 ?, y7 b6 d& P. }
CMicrowaves pass through it when they strike it.
- ^" V H1 Q( X! [ DIt bends the microwaves all the way around until they reach the opposite
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4.What does the word “coaster” mean in the passage?
( ^# r9 ?! n* n AA disk or plate placed under a drinking glass to protect a table top.
, n& J2 i+ {. ` BA vessel engaged in coastal trade.
|* P! T/ T" `$ R1 p; h3 ^ CA roller coaster.
: R0 ]$ m6 f3 z" |6 w DA resident of a coastal area.! x/ M2 x+ p: k3 g/ D9 a: |7 h
5.Harry Potter’s invisibility cloak doesn’t have any real competition yet,' \ M/ t6 q1 r3 ^- @ V) m
because1 B/ H3 r! n! y) z i- z) R
Ascientists have not found out how his cloak works.; v4 B% `+ Q' g
Bthe cloaking device is a total failure. u( d3 O: P- G; h& w/ y
Cthe cloaking device works only for microwaves.
1 Z4 ~" |9 U* @ k, E0 ?- I! G4 A8 c# x/ } Dthe cloaking device works only for visible light.
{% C p5 Q+ v9 o- i& Q0 t7 A 答案与题解:3 M, ]9 F; d- G2 ^4 {6 ^
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。4 X/ B5 {0 O7 E, k" \
2.B第三段最后一句中告诉我们,A是错误选择,B是正确选择。该段第三句说,微波与可见光一样都是一种辐射能,所以C的说法是错误的,不能选择;根据该段第一句:with wavesof light that the human eye can see和第三句:Like visible light,可以得知D是错误的说法,也不能选择。
7 ?2 |9 l. z5 r6 D( F4 z& q" W 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。' [% D4 ~: X+ j8 P7 o7 Y
4.A第四段第一句告诉我们,科学家的这个隐形装置和一个杯垫差不多大小,所以A是正确选择。coaster是一个多义词,其他几个选择是该词的其他意思,B:从事沿海贸易的船;C:过山车,摩天轮;D:海岸地区居民。
. b3 ]( L1 { v. j% G 5.CA句在短文中没有提到;按文章的内容B不是正确的说法;文章最后一段说,And thedevice works only for microwaves,not forvisible light,所以C是正确选择。</p> |