Taste buds are onion-shaped structures with between 50 and 100 taste cells, each of them that have fingerlike projections that poke through an opening located at the top of the taste bud, which they call the taste pore.
语法 Sentence Correction-4182
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ypheroin 2016-01-17 16:17:26
做题时觉得that 指代 each of them应该用单数动词has，所以cross off了这个选项。解释认为that 指代them，have没错。错在each of them... 结构变成了，each of...taste bud, which 的双逗号插入语。这是不符合逻辑。
