551 Once positioned in space, the Hubble Space Telescope will capture light from sources 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（D）
(E) than those detecting
选项D those 指代的是other sources吗？但 fainter 比较的是light啊？是什么能被detected，sources 还是light?
551 Once positioned in space, the Hubble Space Telescope will capture light from sources 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（D）
(E) than those detecting
选项D those 指代的是other sources吗？但 fainter 比较的是light啊？是什么能被detected，sources 还是light?
Once positioned in space, the Hubble Space Telescope will capture light from sources twenty times fainter than those(light) that can be detected by ground-based instruments(which can capture light from sources at regular distance).
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2006-1-30 12:04:00
