At the turn of the twentieth century, forest covering as much as 90 percent of Thailand and accommodating as many as 300,000 elephants, a third of them domesticated and performing various essential tasks. D. covered as much as 90 percent of Thailand and accommodated as many as 300,000 elephants, a third of them... D是正确选项,说是独立主格修饰前面。但是我一开始觉得之前见过某类似题目判了run-on:
Taste buds are onion-shaped structures with between 50 and 100 taste cells, each of them has fingerlike projections poking through the opening located at the top of the taste bud called the taste pore.
这个就run-on了,求解释为啥。
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