American scientist say that they believe trees can warn G) {6 y, {7 |& t/ L; J
each other of danger releasing chemicals into the air.__1__
3 u" Z/ ~4 p/ Z, c2 R9 a The theory was announced by the National Science__2__
/ _: U6 @- p5 A Foundation is the result of studies carried out by3 s/ {+ f o9 V s2 p1 x7 Q
scientist in the states of Washington and New
2 [$ A( }& O% _" _3 v% m Hampshire. The scientists said they found that when' _" g. U4 j- U5 r+ B1 z
trees are against attack by disease or insects, nearby__3__
, i* k$ m% K0 V4 `* K) U2 M trees take the same offensive actions as the trees__4__& F6 R% j- T" ~% a0 j
being attacked. And they said it appears that the: E$ `6 T. i! f
trees being attacked may produce and send out
( ?, ]6 l/ d" p chemicals to warn the other trees. A United Nations'5 \2 U' m" [! i2 A0 V/ o* C9 I
report says Asian countries are faced major environ-__5__/ H- K* z* w C1 \- c2 N
mental problems. The report released in Bangkok
$ S- m# q- b1 G" n7 C% i U6 m C said that parts of China, India, Iran, Afghanistan and
& t) N+ f0 U5 }' u+ R( l Pakistan were threatened by man-made and natural__6__3 n) Z. Q) U# X4 U
events that turn productive land into deserts. I said6 ^4 i3 [9 q a+ E+ L7 k* `
the most serious threat against the area is the rapid; A! z! x' C1 y, A( Z# n/ M2 P
expansion of Asia's rain forests, or woods, especially__7__9 F6 w0 D( e& @
in Malaysia, the Philippine and Thailand. The report# u1 ?& j4 y' m4 ]8 R5 B3 c$ S/ s/ x
said the reduction in woods areas have already led to __8__8 u$ z% e# r" z7 z. V1 Y: n6 H
increased flooding, water shortages in the dry seasons
7 p( E- `; y" C# q% l/ i and the loss of farm lands. A top UN official said that
8 R; Z5 |3 i) @4 F' Q% F as much as 70% of the woods in Asia would be gone in__9__
* E( y, x1 N6 X. i/ c) L( C, l 20 years unless actions are taken now to save it.__10__; S# N$ O0 J; D+ Z
答案及解析： y9 @5 O% |) C- T6 I! d) V/ k+ y
1. 在releasing前加by0 i" m# d8 O* h6 Q0 l; F3 }( a( U- M
用by引导releasing chemical into the air，作方式状语
" u A8 K- H- _# V z- _/ F 2. 删除was或在was之前加which/that. L( R( w2 Z4 m) n
或过去分词announced或用which/that was announced 做定语修饰the theory。The theory的谓语动词为is
i3 u! Q3 N0 a! `0 h& s 3.against—under
! H$ W4 Y/ p* G& e8 n' S3 _ 习语（be）under attack，受攻击
2 D* I8 b0 y. [: w# l. { 4. offensive—defensive
9 u9 f& K( B I4 ^5 q% b$ z 根据常识，当生物收到外界的威胁时，也会进行自卫" o9 i" y) Y& l7 L% T
5. faced—facing或在faced之后加with0 c; M6 p+ e9 O. [6 v5 t, Q3 l
动词face作“面临、应对”解时，有两种结构：被动态“主语+be+faced with+宾语”，主动态“主语+face+宾语”* v: D; E# n: B/ ]4 } B
6. were—are
S8 {0 s: W0 c& N5 | 报告的发布是在过去的某个时候，所以主语中的谓语动词发生在过去时，但报告的内容陈述的是一个事实，谓语动词应该是一般现在时
4 X- R6 R" E' H+ w+ Q 7. expansion—shrinking; {4 I$ d C; H! N; Z
与上文“可耕地变成沙漠”一样，亚洲的雨林面临快速减缩，而不可能扩大，而且下文中有the reduction in woods areas$ T4 q( y5 k4 B; }
8. have—has# y2 M3 N& E2 ^9 W, _. [3 R- x
主语为the reduction in woods areas; ?. B% a% I! _" F6 M+ C
9. would—will# a" l! ] L8 S- e, {
UN官员陈述的是一个完全可预见的事实, |# i$ t: w- e' Y* Y
10. it—them) Y6 n$ D; X8 D0 x% M
them指代the woods |
发表于 2012-8-14 11:29:10
