求高人解释Verbal Review 2nd Edition CR67题解中的两个用法！

chestnuteyes

67. Acompelling optical illusion called the illusion of velocity and size makes objects appear to be moving more
slowly the larger the objects are. Therefore, a motorist's estimate of the time available for crossing a highway
with a small car approaching is bound to be lower than it would be with a large truck approaching.
The conclusion above would be more properly drawn if it were made clear that the
(Al truck's speed is assumed to be lower than the car's
(8l truck's speed is assumed to be the same as the car's
(C) truck's speed is assumed to be higher than the car's
(Dl motorist's estimate of time available is assumed to be more accurate with cars approaching than with
trucks approaching
(El motorist's estimate of time available is assumed to be more accurate with trucks approaching than with
cars approaching

Argument Construction

An optical illusion makes objects appear to be moving more slowly the larger they are.
It is concluded that a driver's estimate of the time available to cross a highway is lower(这里用lower是固定用法吗？)
with a small car approaching than with a large truck approaching.

What underlying assump tion is made in the reasoning? From the given premise about th e
optical illusion, we can infer that, to a motorist cros sing a highway, a car actually
approaching at 60 miles an hour seems significantly faster th an a large truck th at is
approaching at the same speed. The motorist's estimate of time available to cross will
thus be larger(这里为什么用larger，而不是lower的反义词higer?) for the tr uck than for the car. The assumption stated here, but not stated
in the passage, is that the car and truck are approaching at the same speed.

A If the truck is moving more slowly than the car, then th e dri ver's perception is accura te, and not
affected by the optical illu sion.
B Correct. 1his statement properly identifies an assumption implicit in the reasoning.
C If the truck is moving faster than th e car, the motorist might judge that the two vehicl es were
moving at th e same speed- or even that the truck was moving faster.
D It doe s not matter tor which type of vehicle the driver's estimate oflead time is more accurate;
this assumption is not helpful in explain ing the conclusion that the illusion makes larger objects
appear to be moving more slowly than sma ll objects.
E Thi s contradicts information in the passage indicating that the larger the vehicle, the larger the
distortion in the perceived speed.

The correct answer is B.

HarrisZheng

中心思想:同等速度下 所处物体越大 感觉越慢 选B应该没有异议

问题一: lower修饰的是estimate 估计值，评估结果
问题二：这是个逻辑搭配的问题 中文很多时候不讲究 英语中数值用大小高低，数量用多少 所以我想higher lower largeer smaller这里都是可以的 唯独不能用more less

最后，你问的其实是语法问题，你发错地方了

chestnuteyes

中心思想:同等速度下 所处物体越大 感觉越慢 选B应该没有异议

问题一: lower修饰的是estimate 估计值，评估结果
问题二：这是个逻辑搭配的问题 中文很多时候不讲究 英语中数值用大小高低，数量用多少 所以我想higher lower largeer smaller这里都是可以的 唯独不能用more less

最后，你问的其实是语法问题，你发错地方了

-- by 会员 HarrisZheng (2011/12/5 21:19:05)

谢谢HarrisZheng同学的解答。
这道题我的确是问的语法问题。题目选项没有异议。
因为对论坛发帖子的很多工具还不熟悉，所以不知道怎么HIGHLIGHT之类的，问题问得有些不到位，见谅啊！
那么，就证明higher lower larger smaller都能修饰estimate吧？