63.The yield of natural gas from Norway’s Troll gas field is expected to increase annually until the year 2005 and then to stabilize at six billion cubic feet a day, whichwill allow such an extraction rate at least for50 years'production.
A 2005 and then to stabilize at six billion cubicfeet a day, which will allow such an extractionrate at least for
(B) 2005 and then to stabilize at six billion cubicfeet a day, an extraction rate that will allow at
least
(C) 2005 and then stabilizing at six billion cubic feeta day, with such an extraction rate at the leastallowing
(D) 2005, then stabilizing at six billion cubic feet aday, allowing such an extraction rate for at least
(E) 2005, then stabilizing at six billion cubic feet aday, which will allow such an extraction rate forat least
关于D选项 OG上说 IT is not clear what noun allowing is supposed to modify. 我觉得ALLOWINg不是用来修饰主句主语的么 怎么会NOT CLEAR呢 |