38. GWD-18-Q41 Atthe turn of the twentieth century, forest covering as much as 90 percent ofThailand and accommodating as many as 300,000 elephants, a third of themdomesticated and performing various essential tasks. A. coveringas much as 90 percent of Thailandand accommodating as many as 300,000 elephants, a third of them B. coveringas much as 90 percent of Thailandaccommodated as much as 300,000 elephants, and a third of them were C. coveredas much as 90 percent of Thailandand accommodated as much as 300,000 elephants, with a third D. coveredas much as 90 percent of Thailandand accommodated as many as 300,000 elephants, a third of them E. coveredas much as 90 percent of Thailandand accommodating as many as 300,000 elephants, with a third of them
答案是d,我选的a,请问为什么不能选a
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