21. The word "they" in line 9 refers to
(A) formulas
(B) databases
(C) numbers
(D) objects
These formulas operate on extensive databases of numbers
that define the objects in the pictures as(they )exist in mathematical space.
这里as的意思是好象的意思,很显然这里的意思是采用大量的数字库来定义图片中的物体,使这些物体好象实际存在于数学空间中一样!they绝对不是numubers,所以正确答案是D!
44. According to the passage, until the 1920's, the best way to travel between cities was by
(A) steam powered trains
(B) trams and trolleys
(C) bicycles
(D) cars
文中提到1920’s之前主要的工具有:train, Electric railways,bicycles及 Horse-drawn coaches及car,而The steam railroad offered the best, the most reliable and the fastest means of transport.!言外之意是steam powered trains最好!
寄托和太傻给的答案都是错误的!
45. According to the passage, all of rhe following changed travel in America in the 1920's EXCEPT
(A) widespread ownership of cars
(B) improved roads
(C) innovations in public transport
(D) competition between trams and trolleys
这个题目中D是错误的,文中提到了train和trams and trolleys两者之间的竞争,但没说trams 和 trolleys之间的竞争!!!!并没说trams 和 trolleys之间的竞争改变了travel!文中有句话: It took the mass production and ownership of cars, together with increased attention to road construction, to bring the major breakthrough in travel in the 192Q*s.其中对道路建设关注增加和improved roads意思还有点沾边,而D绝对是文中没有说的!
同意1楼:)再加两个。我找到的答案里
9. The word "proxy" in line 23 is closest in meaning to
(A) substitute
(B) preparation
(C) product
(D) choice
这道题似乎答案选D 错了。美国传统词典:代理。应该选A
43. The word "hampered" in line 8 is closest in meaning to
(A) restrained
(B) supported
(C) favored
(D) damaged
这个题觉得有问题,hampered是阻碍的意思,应该选A吧。