16. Sea turtles date back 100 million year and are the only ancient sea reptiles to survive the present Day.
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答案:A 9 \; e. g5 X. V" x
测试点:数的一致.
V8 ]7 F& k) I- S' T5 r( D/ g分析:有阿拉伯数字出现时,应特别注意其后紧接的名词是否应为复数.这里year应为复数。 # d6 |5 u0 R% C+ Z$ G) q. F: s
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17. At a first, the scientific method may appear to be a narrow and restrictive way of gaining understanding.
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0 }4 Y7 g# J, m$ a8 B: x6 Q' g答案:A
; M1 P8 k, H6 J5 H$ l$ Y$ F o- b6 E测试点:习语。 7 t" q9 t; H" _
分析:At first是固定短语,a多余. 5 O' g! N: X2 D( k. N+ D
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18. Since prehistoric times, artists have portrayed subjects that representative their culture.
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* P( R7 O/ ~! ?0 L. Y- w: R答案:D
7 _" h' K+ d- x: O测试点:词性。
0 x$ |% x& e, ^2 G分析:that是从句主语,后面接谓语动词。此处应当用动词represent而不用形容词representative.
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' U8 M# \. D$ y4 v/ l. b' Z19. How many people realize that agriculture is a source of raw materials for clothing and to shelter? % ~+ e6 A8 U& U- ?
答案:D ' y0 y2 n0 M, |, A; p- |) O' A7 a& f
测试点:词性/并列结构.
8 P' W6 B# ~' Z& E分析:看到…and…,应想到它前后两部分同词性、同形式.此处要用名词shelter与clothing并列.
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20. Mammals lose body heat to them environment in cold weather more quickly than in hot weather. " A. F$ W3 A* G* w- r6 {
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答案:B & z( T2 z) H6 d+ K
测试点:代词.
7 u9 O# Z5 T! Z5 T N2 m) V- R% l分析:environment为名词,前面要用形容词性的代词their作定语,不能用them. |