Once positioned in space, the Hubble Space Telescope will capture light from source twenty times fainter compared to those that can be detected by ground based instruments. A. compared to those that can be detected B. compared to those they can detect C. than that can be detected D. than those that can be detected E. than those detecting Ans: D,I choose C
我认为twenty times fainter 修饰light比较合理一些。 C. than that can be detected,同意应该为than that that can be detected D. than those that can be detected,这个选项用those也没有错因为that can be detected by ground based instruments.可以是好几种光。 所以这个比较就是Hubble Space Telescope 探测的光和地球上其它仪器观测的光之间的比较。
the Hubble Space Telescope will capture light from source twenty times fainter than those that can be detected.
the Hubble Space Telescope will capture light twenty times fainter than that that can be detected.
both are right. answer is D.
The 1st sentence : source ---fainter than those (sources) The second : light ------fainter than that(light ---uncountable so use 'that') If compare light, the sentence should looks like the second one, the " twenty times fainter---" close to LIGHT not to SOURCE. The 1st sentence is compare sources, answer is D.