以下是引用nirvana0211在2005-12-19 2:24:00的发言:看这道OG: 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 too long to be registered by the eye making it invisible (C) infrared radiation, however, is invisible because its wavelength—0.1 millimeters—is too long for the eye to register it (D) however, because the wavelength of infrared radiation is 0.1 millimeters, it is too long for the eye to register and thus 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 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. it in C is imprecise.支持原题C正确。 支持原题C正确。 支持原题C正确。 呵呵,今天我正好做大全也做到这道题。这里的it不行,不是因为语法不同,而是因为指代不清楚,因为这个it可以指infrared radiation也可以指wavelengh, 所以OG解释里面用了 E the use of the second it is so imprecise as to be confusing. 而并没有说E是unidiomatic。 而OG11里面也清楚把这道题归纳为 考察Logical predication,我觉得也是指的这里。OG11里面说It is ambiguous and lacks a clear referent而并没有说it不应该出现在这里。
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