人教版卷5-高考英语 全真模拟卷 2月卷 （解析版）模板.doc

试卷第1页，总12页
备战2021年高考XX【名校、地市好题必刷】
全真模拟卷·2月卷
第五模拟
(时间：120分钟 满分：120分)
选择题部分
第一部分　阅读理解(共两节，满分50分)
第一节(共15小题；每小题2.5分，满分37.5分)
阅读下列短文，从每题所给的四个选项A、B、C和D中，选出最佳选项。
A
（2021·山东济宁市·高三期末） Fire ants tunnels get dug efficiently by only a small percentage of the group doing most of the work, thus avoiding pileups in tight spaces. What about the freeloaders? They just sit around while their hard-working colleagues get things done. But might freeloaders actually be necessary for society to function efficiently? The answer could be yes—at least when it comes to fire ants and their efforts to dig nests underground.
Fire ants are highly social creatures. So, Goldman, a physicist at Georgia Tech, and his colleagues wanted to know how individual ants knew what to do without a central leader issuing orders. To find out, Goldman's team labeled individual fire ants with paint and then watched them dig their narrow tunnels—barely wide enough for two workers. It turned out that just 30 percent of the ants did 70 percent of the labor. "I was surprised that we ended up with so few workers actually doing the work at any one time." A quarter of the ants never even entered the tunnels. Others moved inside, but left without digging a single grain of dirt. These behaviors ensured the crowded tunnels did not get blocked with insect traffic, which would put the construction process to a stop.
And when the scientists removed the five hardest-working ants from the site, others immediately jumped in to take up their positions-with no reduction in the group's productivity. It seems that it doesn't matter which ants are working or freeloading at a given time, as long as there is some division of labor to keep the tunnels flowing smoothly. The findings appeared in the journal Science.
试卷第1页，总12页
The study could have implications for robotics. Imagine groups of robots sent to search the ruins for disaster survivors or nanobots coursing through our bodies to detect ill