OG11th----SC107
The physical structure of the human eye
enables it to sense light of wavelengyhs up to 0.0005 millimeters;infrared
radiation,however,is invisible because its wavelegth---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
(E)however,infrared radiation has a
wavelength---0.1millimeters---that is too long for
the eye to register, thus making it invisible
答案是A，但是我不明白OG上对E的解释，我知道E后面的it指代不清，可是为什么that也有问题呢？
OG上说：usinga restrictive clause introduced by that suggests that not all wavelengths of 0.1 millimeters
are too long for the eye to register.
我不太明白该解释，还望高人能够指点，谢谢！ | 
