16. Porcelain is not a single clay, and a compound of kaolin, ball clay, feldspar, and silica.
0 B8 H% Y" }: l, Z9 u 8 Q, A1 f- `% S; ~) _
答案：C
. j3 ]! N |6 j' w. t5 K测试点；not…but…用法.
! _5 E( ]: n) [. c分析：看到not…，应想到后文有表示转折关系的but与之连用，不能用表示并列关系的and连接. 9 e' p2 i# S5 Y% \8 [( y! ~4 _
( T! `8 y# ^# n; U( e5 Q17. The bison, know for the hump over its shoulders, is usually called a buffalo in North America.
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1 b+ O$ t# ?* s: R# s9 N" m' Y答案：A 2 V1 U+ ~& t& [$ ]) ]
测试点：词形
1 B7 U/ x! @' F- ?分析：分词短语作后置定语．know是动词原形，而修饰主语应当用分词应为known. $ w, ~3 t X1 s! S2 ?0 C
8 W2 h% z) ]" H0 u i+ n8 j" C, B
18. Perspiration, the body’s built-in cooling mechanism occurs as a natural reaction to nervousness, intense heat, or vigorously exercise. 5 ^' g6 s" M( e, N1 E# m: R
$ c- {4 O3 A* | s3 P答案：D
7 H5 Q9 U* {) P测试点：词性／并列结构. , T" M4 {5 m" [: M8 H4 z0 D9 J
分析：连词or两边的成份应同词性、同性质，故exercise应与nervousness和heat一样，是名词而非动词。修饰名词应当用形容词vigorous，不用副词vigorously。 + U& \8 {" x/ r+ u. B' [2 _9 z7 R
解题要点；遇到划线的-ly结尾的副词时，应首先考虑它是否与其形容词形式错用. 6 x1 o2 [1 ?# ]& D9 V; Z. p6 U0 C
% G4 p8 B2 ~, q19. Because of the rising cost of fuel, scientists are building automobile engines who will conserve gasoline but still run smoothly.
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! D9 Z" @2 J' b4 t0 K- J% T$ B D答案：D 2 S4 Y/ C; c) _
测试点：who和which的用法.
5 N% D3 c5 o# ?) A7 v$ d$ t分析：定语从句修饰的engines是物而不是人，作为从句主语的关系词不能用who,而应为that或which. 7 ~9 i3 e: E5 j" y
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20. The primary function of a sonometer is to calculate and demonstrate the relations mathematical of melodious tones.
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答案：C ) n% k1 V/ `' T! {" W" {
测试点：词序.
. x% s4 i" L. H分析：单个的形容词修饰名词时，应放在名词前面．应为mathematical relations.
5 q9 {5 z Y7 w8 h6 ?解题要点；形容词(定语) +名词这一结构的词序颠倒是TOEFL常考题型。 |
发表于 2012-8-14 22:34:35
