OG 234

ppjelly

看了大家的讨论，还是不十分清楚排除C的原因，说说我的理解，我觉得C如果真是错，原因如下：
1、    it 指代 eye 或 the wavelength 不清 。
2、本着忠实原文出发，既然原文用被动，选项尽量就用一样的吧。

请大家指正。

Netherlander

这道题C选项很好排除 C中唯一的错误就是句尾的it指代多余（指代wavelength） 造成了roundabout.

即wavelength is too long to register(the wavelength)

这是GMAC常见的小把戏

lcy19812000

以下是引用bobo19790111在2007-5-31 6:14:00的发言：

下面是我对这个题的分析和理解：

234. The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters;
    infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long to be registered by the eye.

(A)  infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long to be registered by the eye

(B)   however, the wavelength of infrared radia­tion--0.1 millimeters--is top long to be registered by the eye making it invisible (修饰eye, 而不是修饰radiation)

(C)  infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long for the eye to register it (it 直待不清楚，因为从句because的引导，it 直待了because后面出现的主语，wavelength, 因此register it就表明register wavelength, 而不是register radiation.意思错误)

(D)  however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus （省略了it is 这里的it = the wavelength,所以说wavelengh is invisible 也错误） invisible

(E)   however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible （it直待不清楚，并且that引导的限定定语从句限定了0。1波长的范围，而不是描述他们的共有特性）

Choice A, the best answer, is clear, idiomatic, and grammati­cally correct. In B, the misplaced participial phrase making it invisible modifies eye rather than wavelength, thus producing a confusing statement that distorts the meaning. In C, D, and E the use of the second it is so imprecise as to be confusing. Furthermore, in D, and thus invisible incorrectly modifies wavelength rather than infrared radiation.
    Choice E produces an illogical statement by using a restrictive clause introduced by that where a comma followed by the nonrestrictive "which" is required: a wavelength of 0.1 millimeters that is too long nonsensically suggests that not all wavelengths of 0.1 milli­meters are too long for the eye to register.

以下是引用Netherlander在2008-10-3 21:14:00的发言：

这道题C选项很好排除 C中唯一的错误就是句尾的it指代多余（指代wavelength） 造成了roundabout.

即wavelength is too long to register(the wavelength)

这是GMAC常见的小把戏

不同意你们的说法。

既然A是正确答案，就说明eye能够register的是wavelength而不是infrared radiation。

所以C中的最后一个单词it错误的原因就只能是它指代了wavelength以外的名词。

按照以上这个逆向推理过程，我们可以发现第二个it指代的应该是infrared radiation。支撑这个观点的论据除了以上的推理过程外，还有第二点：

第二、一个句子（分号前分句和分号后分句算两个独立句子）中的同一个代词应该指代一致（经典题OG10-83或者OG11-V-85），本题C中分号后已有its指代主语infrared radiation，本句中的其它it也就应该指代infrared radiation，否则一定会产生指代混乱。

lcy19812000

当然，这道题除了要搞清楚its，it指代的应该是infrared radiation外，

还需要明确的两个比较易混的（或者说跟中文逻辑不大一样的）逻辑要点是：eye register什么？是wavelength

invisible的是什么？是infrared radiation

最后结合前人所说的不同词组结构的主动与被动倾向，这道题就应该能解决了。

michzhou

register:
To set down in writing; record: “It is for the historian to discover and register what actually happened” (Robert Conquest).

realrual

刘振民的书里写了

to xx to be done by xx 是固定用法

我就是觉得他总是把答案用固定搭配来解释。。。。。。

liyinghan

下面是我对这个题的分析和理解：
234. The physical structure of the human eye enables it to sense light of wavelengths up to 0.0005 millimeters;
               infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long to be registered by the eye.

(A)  infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long to be registered by the eye


(B)   however, the wavelength of infrared radia­tion--0.1 millimeters--is top long to be registered by the eye making it invisible (修饰eye, 而不是修饰radiation)


(C)  infrared radiation, however, is invisible because its wavelength--0.1 millimeters--is too long for the eye to register it (it 直待不清楚，因为从句because的引导，it 直待了because后面出现的主语，wavelength, 因此register it就表明register wavelength, 而不是register radiation.意思错误)


(D)  however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus （省略了it is 这里的it = the wavelength,所以说wavelengh is invisible 也错误） invisible


(E)   however, infrared radiation has a wavelength of 0.1 millimeters that is too long for the eye to register, thus making it invisible （it直待不清楚，并且that引导的限定定语从句限定了0。1波长的范围，而不是描述他们的共有特性）

Choice A, the best answer, is clear, idiomatic, and grammati­cally correct. In B, the misplaced participial phrase making it invisible modifies eye rather than wavelength, thus producing a confusing statement that distorts the meaning. In C, D, and E the use of the second it is so imprecise as to be confusing. Furthermore, in D, and thus invisible incorrectly modifies wavelength rather than infrared radiation.
               Choice E produces an illogical statement by using a restrictive clause introduced by that where a comma followed by the nonrestrictive "which" is required: a wavelength of 0.1 millimeters that is too long nonsensically suggests that not all wavelengths of 0.1 milli­meters are too long for the eye to register.

-- by 会员 bobo19790111 (2007/5/31 6:14:00)

C选项分析的不对，你自己仔细看一下，你分析的C和A不是一个意思吗？都是register wavelength。。我觉得你是看到答案之后去想的分析。。。这题C最后一个it是多余的。。。。其他的意思都是对的。
E的意思很诡异，E选项的意思是：“红外辐射有一个眼睛看不到的0.1cm的波长，因此.....”除了你分析的it指代不清之外，意思上也不通顺。。真实的意思是“红外辐射的波长是0.1cm，因此人眼看不见“。。E选项的说法是”红外辐射除了有0.1cm的波长外，还有0.2,0.3,0.4cm，但是，它拥有0.1cm波长这件事导致人眼看不见它了”。。这题有点太技术了，但不需要这个背景，也可以把E排除掉。。


仔细类比一下：
细菌是看不见的——因为他的直径是1万米——对人而言太小而看不见；
细菌有一个1万米的直径，对人而言太长而看不见。
OG对E的解释很清楚：Choice E produces an illogical statement by using a restrictive clause introduced by that where a comma followed by the nonrestrictive "which" is required: a wavelength of 0.1 millimeters that is too long nonsensically suggests that not all wavelengths
of 0.1 millimeters are too long for the eye to register.