题型:阅读理解 题类:常考题 难易度:普通
江西省抚州市临川区第一中学2017-2018学年高二上学期英语第一次月考试卷
Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined.
Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition “depending on who needs it”.
Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌) networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神经元) in our brains, and when one tree is destroyed, it affects all.
Simard talks about “mother trees”, usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down “mother trees” with no awareness of these highly complex “tree societies” or the networks on which they feed, we are reducing the chances of survival for the entire forest.
“We didn't take any notice of it,” Simard says sadly. “Dying trees move nutrition into the young trees before dying, but we never give them chance.” If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
Joe is interested in getting exercise and competing (竞争) on a team. He reads about the events at the local pools and finds the perfect activity.
Swimming Programs
Summer Swim Team
Join a Summer Swim Team and compete with other swimmers! The program is offered at eight different local pools for youths to 17 years old. The season runs June 21-August 21. Practices are daily (Monday through Friday) throughout the summer. Cost: $50.00.
Buckman | 2-3 P.M. | Montavilla | 8-9 A.M. |
Creston | 7-9 A.M. | Peninsula | 4-7 P.M. |
Dishman | 8-9 A.M. | Pier | noon-1 P.M. |
Grant | 8-10 A.M. | Sellwood | 7-9 A.M. |
Junior Swim Instructor (少年游泳教练)
Two weeks, 20 hours of instruction, two hours per day for children 11-14 years old. Pre-training for youths interested in becoming swim instructors ($45 per child).
Junior Lifeguard (救生员)
Two weeks, 30 hours of instruction, three hours per day for children 11-14 years old. Pre-training in lifeguarding, and customer (消费者) service ($45 per child).
Junior Swim Instructor & Junior Lifeguard Training Dates
June 28-July 9 | August 9- August 20 |
June 12-July 23 | August 23- September 3 |
June 26-August 6 |
Special Offer
Anyone who takes part in both junior swim instructor and junior lifeguard programs at the same time need only spend $75 instead of $90 for 50 hours of training.
Register(注册) Online
You can now register online! Visit our website at http://www.example.com. You can choose an area of town, a specific local center, a program, or search for classes which can meet the needs of students of different ages. Just visit our website, and you're on your way!
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