嘻，你给我加分，我给你加油

第四篇（鸟）：
7 h! H9 a9 o; J+ @We’re just (seen two) <contemporary> large birds that cannot fly: the (emu and the ostrich). Over here is an interesting specimen from the past. This stuffed animal is not the giant (penguin) is appears to be, but an (auk). This particular kind of auk is very rare—only seventy eight (skins) are known to exist and most are not preserved (as well as) this one. The great auk as you can see was a (rather) large bird and it couldn’t fly either. However, <evidence> suggests that this auk was an excellent swimmer and diver. Unfortunately, those abilities did not protect it from been easy <prey> for hungry (sailors) who years ago sailed the very cold and often icy waters of (Greenland), Iceland and (Scotland). In fact, (records indicate) that auk was rather <tasty> and that its eggs…excuse me… that its eggs and <feathers> were useful as well. Still, it isn’t clear what other factors led to the big bird’s (demise) around 1844, the last time anyone reported seeing one. Of course, we believe it’s important to take extra (precautions) to preserve the remaining great auk skins. After all, these specimens should (prove invaluable) for future <scientific> research. Does anyone have any questions before we move on to our next bird exhibit? 4 Q8 t* i5 a1 ~* @
contemporary: [ kən'tempərəri ] 同时代的(人), Q- h) f4 s( N5 N6 Q% ^3 G
emu: [ 'i:mju: ] 食火鸟8 a. `/ |3 o4 G! F* j7 X! L" `! g  b
ostrich: [ ' ɔstritʃ ]  驼鸟
) p4 E. ]+ E9 J* i, U5 H" H+ Y7 ygiant: [ 'dʒaiənt ] + `/ n! T; G/ _/ B
penguin: [ 'peŋgwin ]  企鹅0 T: J0 X' q3 f# e0 `4 n
auk: a 海雀科的鸟# G. }! {: p' d8 @
diver: [ 'daivə ]
+ N% {( h3 @4 Jpreserve: [ pri'zə:v ]  5 ^7 O+ U0 j0 V3 b, g! S5 [6 ]

$ r) b. Z# V9 D& s' g% w4 S. V) S8 p$ Zprey: [ prei ] 捕食,掠夺 n. 被掠食者! b5 ?# l% S4 S  `: K
sail: [ seil ] . }  v0 Q# ?* ?
icy: [ 'aisi ] 冰的,冷淡的
! I2 L5 J, L, i* E: y2 Xtasty: [ 'teisti ] ' `, F3 a1 O7 M) }+ l, Q, p. t
feather: [ 'feðə ]  
! v* j2 ~, S7 rdemise: [ di'maiz ] 死亡 v.遗赠,转让
# Y6 \; g) N  `2 q+ j; Aprecaution: [ pri'kɔ:ʃən ] 预防,警戒: Q* K" R' J) Z2 s: g* x
invaluable: [ in'væljuəbl ] 无价的/ t4 ], r. `1 S* P' T
scientific: [ saiən'tifik ]  
9 A6 A" Y5 e5 H( s9 t2 v　　这句Unfortunately, those abilities did not protect it from been easy <prey> for hungry (sailors) who years ago sailed the very cold and often icy waters of (Greenland), Iceland and (Scotland).中prey for感觉怪怪的？

第五篇（Tyrannosaurus rex）：
/ k, V# m5 z( ]9 K# SBefore I tell you about the interesting discovery related to (tyrannosaurus rex), I need to review something we studied last semester—the difference between what are commonly called cold-blooded and warm-blooded animals. In warm-blooded animals, (birds) and mammals for example, the body temperature normally stays (within) a narrow range, no matter what the outside temperature is. As a result, a warm-blooded animal is usually active in both cold and hot weather because its body temperature can adjust to the temperature of its environment. 1 _" |7 S/ C. a- ]- b4 F; Y8 Y
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On the other hand, cold-blooded animals such as (reptiles, amphibians) and insects are unable to create enough heat (internally) to raise their temperature above the temperature of the environment. So for example, the temperature of a cold-blooded animal falls when the environment is <cool>." J; _0 o$ M' w

8 O* G6 @- T" b/ O
( _; Z1 ?) X6 K- H- P8 P  @I hope this (distinction) is clear. Now, moving on to tyrannosaurus rex…you may know that <dinosaurs>, being reptiles, are generally believed to have been cold-blooded. Well, a recent research study found that the chemical <composition> of the bones of tyrannosaurus rex was <consistent> with the bones of animal that has a very narrow range of (internal) temperature, indicating that it was probably warm-blooded.
, t  i0 h1 _, k5 z0 [( rtyrannosaurus: [ tirænə'sɔ:rəs ]
* f$ |9 V( M7 r  x1 K# D& omammal: [ 'mæməl ]
6 x$ ^* V! }6 Z; I9 ~% h  _4 `range: [ reindʒ ]
) d8 Z+ ?. v6 I" ereptile: [ 'reptail ] 1 h+ [2 ^2 z+ f. B6 E# k, `
amphibian: [ æm'fibiən ]  两栖类的(动物)，水陆两用
7 {- q( e8 Y2 ]  f- u+ M1 {. p* ]0 qinternal: [ in'tə:nl ]  内部的,国内的: N$ b3 i$ O: P" a# D& s7 _- C0 ]
distinction: [ dis'tiŋkʃən ]  差别,不同- r2 q# S4 _; M: @8 R3 d
dinosaur: [ 'dainəsɔ: ]
1 W8 \, S+ E; B4 bcomposition: [ kɔmpə'ziʃən ] 作文,组织,成份& q6 T) p: V3 c  ?
consistent: [ kən'sistənt ] 一致的,坚持的

霸王龙的，嘻

第六篇（electric fish）：3 _4 g/ p& N( Q" K# q7 d& T) _( H7 \
This room is devoted to electric fish. The (eel) in the (tank) behind me can produce a strong (jolt) of electricity to (stun) its prey, but most of the fish in here produce only weak electrical (impulses) that are useful for (navigating), locating food and even for communicating. 3 |% `" F. R/ e' V

- r% p  z" E/ X3 \. AThe <knife> fish is a good example. This fish navigates using tiny receptors in the skin that are sensitive to electrical impulse. The knife produce electrical signal and the receptors in its skin let it know when the (signal it distorted) by a tree root, or by some other <obstacle>, so it can go around it. 3 s$ {5 C  a" i6 O, A
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Fish also using the ability to produce and detect electrical impulses to communicate. They can tell each other what (species) they belong to, how big they are and whether they’re male or female. We have (a tank) here that’s specially equipped to <convert> the (inaudible) signals the fish produce into sounds you can hear when you put on these (headphones). I (urge) you all to listen (in when) I’m done speaking.
( R- s$ t' d1 T& A" U$ a$ \7 _% R3 l+ o0 K
Now have a look at the electrical (rays). Rays are especially interesting to medical researchers because of the (organs) they use to produce electricity. These organs contain a (chemical) that carries signals from one (nerve ending) to the next, not only in the rays, but also in people. By studying these organs, scientists hope to learn more about the diseases the (interrupt the transmission) of impulses from one nerve to another., a1 _7 H* D6 |7 I, G1 ^
devote: [ di'vəut ]  
: C5 H; ^$ O2 X" Seel: [ i:l ] 鳗鱼,鳝鱼0 o. p8 x. R( d- [. W6 x& x6 z' U* x* H
tank: [ tæŋk ]  水槽 v, b; b: Y' ?3 V8 @. [
jolt: [ dʒəult ]  震摇 n v. v# k1 Y' F1 N) `
stun: [ stʌn ] 使晕倒,使惊吓3 }8 T" [/ o  s8 h2 M
impulse: [ 'impʌls ] ; J1 e+ d, ?% f1 Y; \
navigate: [ 'nævigeit ] 航行,操纵" k) t$ L! w$ Y
tiny: [ 'taini ]
+ n8 q. v6 G$ U) v. mobstacle: [ 'ɔbstəkl ]
+ ~9 \: y1 u: r* u" ]- x' Zspecies: [ 'spi:ʃiz ]  ( Q3 S! U! w2 ^0 V' j# H" x
convert: [ kən'və:t ]  
+ G; g2 h2 h  `) V2 J+ a' W, V  z% O0 t/ x6 F; c2 l# R" U& V8 G
inaudible: [ in'ɔ:dəbl ]  听不见的: z5 ~& ]  a/ w- O  G. _
urge: [ ə:dʒ ]  冲动v. 驱策
4 K+ z3 J+ b% a) d! Erays: [ reiz ] 射线
$ Q  q9 N) B$ [# U* S4 z2 ^organ: [ 'ɔ:gən ]  9 ^6 r& t: `' I9 g; T1 N7 G
nerve: [ nə:v ]  神经(生物); U, q6 x) F  w
interrupt: [ .intə'rʌpt ] # ]% K1 Q, M0 L7 N
transmission: [ trænz'miʃən ]0 ]$ r( f$ T2 _6 t1 n% i- L' r
  这篇有两个地方听很多篇也听不出来：第二段最后一句中的(signal it distorted)，最后一段的最后一句的 of impulses 。
9 R- H  _; z* {' X
% Y, z& m0 l! x2 j' m  k. G[ 本帖最后由 流浪北国 于 2008-6-26 23:48 编辑 ]

第七篇（Mouse）：
/ A9 C6 ?, X1 l; e7 WHuman populations near the (equator) have (evolved) dark skin over many generations because of <exposure> to the (fierce rays) of the sun. A similar <phenomenon> has also occurred in other parts of animal <kingdom>. The Africa grass mouse is a good example. Most <mice> are (nocturnal), but the Africa grass mouse is active during daylight hours. This means it spends its day searching for food in the (semidry) bush and (scrub habitants) of <eastern and southern> Africa. Its (fur is striped), like a (chipmunk’s), which helps it blend in with its environment. Because it spends a lot of time in the intense <tropical> sun, the grass mouse has also evolved two <separate safeguard> against the sun’s (ultraviolet) radiation. First, like the populations of human in this region of the world, the skin of grass mouse contains lots of (melanin) or dark pigment. Second, and quite unusual, this mouse has a layer of melanin-pigment tissue between its (skull) and skin. This (unique) “cap” provides an extra <measure> of protection for the grass mouse and three other types of Africa mouselike (rodents) that are active during the day. The only other species scientists (have identified) with the same (sort) of skull (adaption) is the white tent-making (bat) of the Central American (tropics). Although these bats sleep during the day, they do so (curled) up with their heads exposed to the sun.9 U( ]8 P: b/ l; X- w+ L+ m% P* Q9 d
equator: [ i'kweitə ] $ x' s/ B' ?$ p
evolve: [ i'vɔlv ] 进展,进化
- n6 [3 g0 A) f/ f3 Gexposure: [ iks'pəuʒə ]  
/ j, E2 i& Z* S% q4 B) b
+ I3 ?" D- Z9 j* P" b# |fierce: [ fiəs ] 猛烈的,残忍的
4 ^9 c# \* a$ a; o$ ymice: [ mais ]  复数
9 r5 h* S; [; mnocturnal: [ nɔk'tə:nl ] 夜的
# O7 `" D" y% C% }  Bdiurnal: [ dai'ə:nl ] 白天的
0 V( @7 G4 g' v7 Z5 Zscrub: [ skrʌb ]  矮树 4 m" A2 j5 H% D# c2 {0 v& m
semidry: [ .semi'drai] 半干性的
! b! R+ c) O, K' F/ Qchipmunk: [ 'tʃipmʌŋk ] 花栗鼠* n' C) U8 v  s; P1 W- f
stripe: [ straip ] 条纹& F0 _' G. j% j% w7 D
blend: [ blend ] 混合) p/ a! a/ \9 p! z( d+ F
tropical: [ 'trɔpikl ] 0 X9 D5 j! p4 G, c" n/ g& c" o
tropics: [ 'trɔpiks ] 热带
' v$ v) a' `3 ?% y  y8 W0 y8 {; Psafeguard: [ 'seif.gɑ:d ]  4 {3 o7 e+ p! j5 Y% n& O8 M
ultraviolet: [ 'ʌltrə'vaiəlit ] 紫外线的2 W) G' F- n/ A! j4 G
melanin: [ 'melənin ] 黑色素: a+ V7 t- ?6 s* y: o3 c4 C
skull: [ skʌl ] 头骨( P# V* n/ @, ~9 G* c$ T" F
unique: [ ju:'ni:k ]
/ w# [. W/ n' V& F5 x5 Arodent: [ 'rəudənt ] 咬的,臼齿类的  C$ J( \/ Y: t/ P
identify: [ ai'dentifai ] 识别,鉴定
: [) S5 ^* k/ Dbat: [ bæt ] 蝙蝠,球棒   B# g5 K* J2 w
curl: [ kə:l ] 卷曲

哇，好多单词哦 ，都要记住哦。

这几篇专业性强啊，生词多，共同加油！

缺一天的。

引用:

原帖由 popcornwl 于 2008-6-28 22:10 发表 3 h2 H4 O0 q* w( A1 i) ~
缺一天的。

5 c. i! F5 S% L& i4 X  {
我也缺  怎末不监督我 $ [1 z" c; B. p4 a" p
流浪的头像就是乖 呵呵