题目内容
At first, Sam Walton was the owner of a ______.
查看答案
搜索结果不匹配？点我反馈
更多问题
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
听力原文：W: Come to my house if you can be there before 11 o'clock, Mike. Otherwise, I won't be able to see you until tomorrow.
M: The library closes at 10 tonight, Susan, so you can expect me to come by right after that.
Q: What do we learn about the speakers？
(12)
听力原文：M: Excuse me, but has anyone turned in a red briefcase？ I've lost my briefcase. It contains my documents for the conference, and they are pretty important to me.
W: Yes. We had a briefcase brought in this morning. Wait here just a minute, please.
Q: What will the woman probably do？
(16)
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.
(27)
A．They lose water constantly.B．They contain a relatively lower concentration of salt.C
微信支付 
支付宝支付