题目选项分析

Taste buds are onion-shaped structures with between 50 and 100 taste cells, each of which has fingerlike projections poking through the opening, called the taste pore, located at the top of the taste bud.

Taste buds are onion-shaped structures with between 50 and 100 taste cells, each of which having fingerlike projections that poke through an opening, which is called the taste pore, located at the top of the taste bud.