Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Ants have an amazing ability to communicate with each other and work together to accomplish complex tasks. Their specialized behavior. (30) due to chemical communication is so well developed that humans can learn a lot from them about how best to work in teams. British scientists at the University of Bristol are studying colonies of army ants to understand how they organize themselves and share knowledge. These insects are known for using their bodies as living plugs to cover holes on the rough terrain between their nest and their prey. When they encounter a hole in their path, they quickly determine which of them is the best fit. The appropriate ant then lies across the gap, allowing the remainder of the group to step on its back. (31) This important minority of ants maximizes the food collection of the entire colony by literally "paving the way" for the others.
The collective behavior. that emerges from a group of social insects, such as ants, can be called "swarm intelligence". Swarm intelligence consists of the self-organization of many individuals that work collectively to find the best solution for a difficult problem. The concepts of swarm intelligence have been used in a variety of human applications. (32) "Ant colony maximization" has been mimicked as a routing method that improves the efficiency of cargo transfers on airplanes, and has even become a routing technique for moving data across telecommunications networks more smoothly. I guess you could say that our daily lives benefit from the tireless work of ants.
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A. Humans got equal teamwork with ants.
B. Ants usually accomplish the most complex tasks.
C. Ants communicate through chemicals.
D. Ants have an amazing ability to specialize behavior.