四川省凉山州民族中学2025-2026学年高二上学期12月月考英语试题（扫描版，无答案）

0 For years,cities have been troubled by a common problem:tree roots often grow into under-ground pipes, causing jams and cracks.At first,people thought it was just because roots spread out randomly(). However,a recent research led by Dr.Emily Chen,a well-known plant biologist from the University of Green Sciences,has found a surprising truth."Tree roots don't grow into pipes by accident.Their growth is a planned response to their need to survive,"Dr.Chen said. The research found that roots are very sensitive to signs of water and nutrients.Underground pipes, especially those carrying warm,damp waste,let out small amounts of water and nutrients into the soil around them.Roots can"sense"these signs and invade()the pipes,just like how plants grow toward sunlight. Once roots reach a pipe,they take advantage of weak spots,such as small cracks in old clay pipes,to get inside.There,they keep growing and soon form thick masses that block water flow. The research also noted that not all trees are equally harmful to underground pipes.Fast-growing species like willows,which have large,far-reaching roots,are most likely to damage pipes,while slow-growing ones such as maples-with smaller root networks-rarely pose a threat.Besides,further study found that modern plastic pipes have smooth surfaces and no easy cntry points,making them much harder for roots to get into than old clay pipes that often crack over time. These findings are already making a difference.Take Chicago for example,where the city uses underground pipe maps to plan where trees should be planted.Near pipes,slow-growing types are picked instead of faster-growing ones.These small changes have cut pipe repair costs by 30%in some areas,showing that understanding tree growth can help cities keep greenery and city facilities in harmony. 32.What was the unexpected discovery of the research from paragraph 1 A.How to stop tree roots overspread. B.Why tree roots often grow into pipes. C.Where jams and cracks of pipes appear. D.What to do with underground pipe issues. 33.What does paragraph 2 mainly talk about A.The source of nutrients. B.The feature of weak pipes. C.The location of pipe cracks D.The process of root invasion. 34.Which of the following is an application of the research A.Reducing pipe-repair cost. B.Adjusting pipe-laying depth. C.Selecting pipe-friendly trees. D.Installing pipe-protection facilities. 35.What is the author's attitude toward Dr.Emily Chen's study A.Favorable. B.Doubtful C.Neutral. D.Critical. 第二节共5小题；每小题2.5分，满分12.5分) 6