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6. _________ directly with most metals to form compounds called carbides.. |& J) A, d2 g/ ^
A. Carbon reacting+ o m7 Y& e7 Z
B. Carbon reacts4 N9 O, L0 f( S* {
C. The reaction of carbon& S% t8 p p, q3 R& O
D. When carbon reacts0 f/ |* z) C* b p6 `% P* G G
答案：B
3 R, e2 w6 R3 ~+ f0 t8 B& f 分析：从句意来看，called在这里不是谓语动词，而是分词做后置定语：…… which are called carbides.空格中缺主语和谓语，选B.
$ R, }, g% v5 C% A& x, P 参考译文：碳直接跟大部分金属反应而形成碳化物的化合物。
" I' g2 _+ w7 s4 `3 @$ w 7. Meteorites are slowed down by Earth's atmosphere， but if they are moving _________， they can form a crater on impact.
% E# B) M) x7 B( `& y0 P0 R A. enough fast5 b1 {4 T3 t5 A8 s" Z2 c
B. fast enough
% Q3 `5 R" j' i" A C. so fast enough% n6 Y, A' f: M. }
D enough are fast
! {' s+ D* r" {8 k7 Q 答案：B
b) Z. x' u4 [3 Z3 X, x 分析：enough的用法，固定顺序：adj.+enough
6 {3 p1 O: t6 L( T( Y) r8 ^, F 参考译文：陨石受地球大气阻挡而慢下来，但如果他们移动的足够快，他们能在撞击后形成一个大坑。. r) p: M( G. K) K0 p: p
8. Located at the upper end of each________ an adrenal gland， an integral part of the endocrine system.2 U+ @$ h( M- t0 t7 V
A. kidney which is
9 k6 }7 B9 B% M7 Y% ~2 y* b B. kidney is
+ X8 U, g9 i5 j- i) @! f) d4 V. ` C. kidney being
0 q7 \3 B1 g. a, s# F' y" S D. kidney6 ^8 W& T; |3 D" l
答案：B5 m4 b5 b, V+ _" J& U/ \. y% q2 J2 W
分析：该句为简单句，而且使用了倒装形式，原句为：An adrenal gland， an integral part of the endocrine system is located at the upper end of each kidney.
0 z, k9 g$ U7 v 参考译文：肾上腺是内分泌系统的一个完整的部分，它位于肾的上端。
6 k' s" w8 w4 Y9 d& O 9. About 75 percent of all cadmium is used for cadmium plating of _________ such as iron and steel.' `; W$ ?- W0 e8 L) W& j1 V: a
A. easily corroded metals
2 S, p$ l4 \6 ^! a7 S& }. i B. metals are easily corroded
4 W2 b9 c! f" ]9 g C. corroded metals that easily
$ m2 O% }) K& J- N9 _( R8 p D. how easily metals corroded8 L, N! _+ s) B4 m& W! T l
答案：A
6 D; t/ h. Y& V' R 分析：B中的are多余，否则句中出现两个谓语，错；C中的that引导定语从句，而从句缺谓语，错；用法错误，of后一般接名词。0 i" I- b3 E M. {! N/ D5 E8 e3 _
参考译文：75％的所有镉金属都用来对类似铁、钢的容易腐蚀的金属进行镉镀膜了。
' \2 ?6 t5 q8 V0 i1 }0 x7 B 10. An atom is a basic structural unit of matter， the smallest particle of an element _________ into chemical combination.
" {$ K, ~: d5 U. _ A. that can enter
" F8 I E: d- I! ^* v+ G& q7 e B. can it enter: ]1 I) g: I; l/ I
C. when entering it can! a! ^2 P8 B7 I3 {, N( x
D. that enters can
3 e" E2 p* N$ }! z9 w) N j 答案：A
' _7 u ?" k8 I- ~3 J/ x 分析：that引导定语从句，element为先行词。the smallest particle of an element 是 a basic structural unit of matter的宾语同位语。
# `+ [& I1 U0 R7 l/ v 参考译文：原子是物体的基本结构单元，是元素形成化学组合特性的最小的颗粒 |
发表于 2012-8-14 23:32:39
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