You stare at waterfall for a minute or two, then shift your gaze
: o/ y2 Z/ k+ R! ] n7 ?0 C" o! R to its surrounding. What you now see appears to drift upward. You __1__
5 B& T0 u4 P- n2 d' O are board a train in a busy station when suddenly another train next __2__
$ ]3 E; A; j# L to your starts moving forward. __3__9 l d4 h3 _. _& O
For a fraction of a second you feel that your train has lurched7 u. @' R: U1 q% T) G3 V9 r* h
backward. These optical illusions occur because the brain is
3 d% s9 L7 X, s1 ~9 h7 `1 n constantly matching its model of reality to signals from the body’s6 m! v7 R1 U3 J9 G' d# ]' q
sensors and interpret what must be happening – that your train __4__
: F" L: q6 a4 F2 p: e" V3 w6 j might have moved, not the other; that downward motion is now __5__
" n* K5 r8 F9 B normal, so a change from it must be perceived as upward motion.+ v, O0 R/ t9 m2 f1 G
The sensors that make this magic are two kinds. __6__. M2 M$ B- \+ m* @' x# Z6 o" L
Each eye contains about 120 million rods, which provide some-
( X8 y' f/ z0 f3 J% h9 w0 B what blurry black and white vision. These are the windows of night
1 H2 e7 L8 d0 u/ K# K vision; once adapted to the dark, they can detect a candle burnt __7__
* S; X- G- ]: z! t V$ m h4 f/ W ten miles away. Colorful vision in each eye comes from six to seven __8__* C; ]! ~+ J' a z: ?9 T3 E
million structures called cones. Under ideal conditions, every cone7 K" _6 z- W4 `
can “see” the entire rainbow spectrum of visible colors, but one1 L# r; M% c% ? Q; N
type of cone is most sensitive to red, another to green, the third to __9__
9 w( W3 m) I& F blue.
' W2 @1 {' ~7 S% \1 B+ {0 h By monitoring how many wavelength of light affects the different
. K" q# t* H0 S7 F: r cones, a connected ganglion cell can determine its “color” and relay
7 j' T- |0 Q9 E2 k# R% x1 J3 y that data brainwork. Rods and cones send their messages pulsing an __10__
! o' ~. l4 c; K0 s! Q average 20 to 25 times per second along the optic nerve.) [0 y5 v5 g. ~8 J5 A
答案及解析:6 C0 t1 h; t- d6 o# c! d
1.surrounding－surroundings) G5 k8 }% X- p- Y7 H& _$ k
surroundings作为名词总是以复数形式出现，surrounding是形容词。8 C4 t8 f& k, M( v
2.board－aboard；^board－on; k+ o2 p, a6 Y+ z- w
be abroad a train ( a ship, a plane…)意思是“在火车（船、飞机）上”。board 是名词，可以说be on board （这个改错之前也出现过，经常出现的大家可都要记住啦）6 O0 `2 i! T# [ Z+ A& R
3.you－yours. | p8 }5 t4 ]& {4 p
物主限定词your不能作介词的宾语，应该用物主代词yours。& l( l) J% d2 V: D: d* U
4.interpret－interpreting
6 D( V4 @* P4 A2 v3 j) T R1 I Interpret 通过and 和matching并列，所以也应该是进行体形式。7 |) {0 |3 o9 j' J$ S
5.might－must$ C ~, k7 o+ }, I8 z" T# }
根据上下文，这里必须用表达非常肯定的语气must，而不是不肯定的“might”，而且，后面的not the other也强调了非此即彼的肯定性。
# d x* |- _ N' [# k 6.are^－of
4 d+ \8 [0 l7 w! `' c, D 加上介词of作主语补足语表示对主语的某一种性质的描述。
v5 I9 P d, B3 B6 ^ 7.burnt－burning
5 s0 q7 M. ?9 A. ~ E, z& Y 如果用过去分词burnt修饰candle，那么是说“十英里之外燃尽的蜡烛”，那是不可能用肉眼看到的，所以应该改成burning，表示“在燃烧的蜡烛”。
: F" C. {" b+ ` 8.Colorful－Color* f% w2 F6 a$ x* Q. C9 y+ \
Colorful是指所修饰的事物本身具有明亮的或者不同的颜色，而color作定语是指修饰的事物使别的事物的各种颜色能够展现出来，而不是仅仅看到黑白两色，比如：color television，color photo，color picture等。/ `; h/ @+ C2 Q5 a
9.the－a ?, }+ c1 _4 l. j+ k
the third 表示顺序排列，和the first， the second 对应，“a third”表示数量上的增加，和one，another相对应。
/ X8 F! n' ?, v8 K0 W! S, m 10. that－those$ @) Q% B; {( O- d
data这个词是datum的复数形式，所以应该用those修饰 |
发表于 2012-8-14 11:29:10
