6. _________ directly with most metals to form compounds called carbides.0 `7 Z0 z: q7 ~; C* p
A. Carbon reacting
* r# v# r5 R! ? B. Carbon reacts2 M+ P+ O! c( ]7 q2 M
C. The reaction of carbon' }( t z7 H% n4 I5 O
D. When carbon reacts
& }% O" {7 T' N9 c/ A/ p 答案:B
, G# n- Q# H# X+ ? ~$ b 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.; V: ]' y% T% {0 A$ `& l
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。, E" ]* B5 B0 r! [: b2 p, ?* W
7. Meteorites are slowed down by Earth's atmosphere, but if they are moving _________, they can form a crater on impact.
$ s, h1 b- @+ t; B' Y$ W A. enough fast8 B4 h- Y+ o, R# V
B. fast enough0 G7 Y( |* c3 X# o; M8 g+ F: R, W! k
C. so fast enough
0 |9 `! v) V& x9 s D enough are fast) R$ I8 m6 j5 P h; i% _' W
答案:B4 J3 d4 F4 H) d3 D* m
分析:enough的用法,固定顺序:adj.+enough
- Y; @% @, T5 H 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。
% \ K$ i2 Y- O2 }5 f 8. Located at the upper end of each________ an adrenal gland, an integral part of the endocrine system. X9 m" q4 ]: e6 b) B8 t$ E
A. kidney which is) f0 Q z+ U5 u( Q
B. kidney is. j3 {* k; B( E, j+ V
C. kidney being( O: o: \. z6 H" g* n* e
D. kidney
6 D3 a3 c+ r: R( B 答案:B: E+ M9 B- \( ~# b0 E
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.
" H; T3 c) g4 c. q: L& B- @4 V, L 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。4 v* S4 Y4 K, J. w1 T9 e
9. About 75 percent of all cadmium is used for cadmium plating of _________ such as iron and steel./ {+ ?9 i& s6 Z$ H6 o
A. easily corroded metals7 z4 h3 w: b2 D
B. metals are easily corroded1 Y- `, |( p* ]4 X- }
C. corroded metals that easily" E+ T9 a- c" T. i5 W& W' v
D. how easily metals corroded1 }5 r" {; d- j; d9 s$ t
答案:A
h# H" B( X. X g: Y. 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。$ E3 n+ N8 [. u, i9 {
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。
3 m9 Z# M4 \$ ] 10. An atom is a basic structural unit of matter, the smallest particle of an element _________ into chemical combination.- v/ x, C6 z2 p, a4 [+ z7 Y, e
A. that can enter
. |4 |0 S! J; S6 D B. can it enter" v0 \" [ h' O* b, P2 r
C. when entering it can
; B! G' o* s: N: f8 u" f% N G D. that enters can
3 R- J9 P, ^% Q; [) W$ v2 s$ I6 n; d 答案:A
' j$ v/ u7 j( ~ 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。
/ \! p3 w B8 Z" t, Y8 O 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 |