15.The boy student quarreled with his class teacher and left,______ never ______ back to school again.
A.determined;to come
B.being determined;to come
C.determined;coming
D.determining;to come
解析:determined to do是固定结构“决定干某事”,在句中作伴随状语表示状态。句意:那个男生与班主任争吵后离开了学校,决定再也不回来上学了。
答案:A
二、阅读理解
A
Why are spider webs able to bear that huge force?Maybe you have asked yourself this question.Recently,the scientists have uncovered the secret,and they claim the findings could be used to help design a new generation of super strength materials.
The study found that it is not just the remarkable strength of the silk spiders spin,but also a web’s complex design that increases its ability to bear loads.Its complex structure means that when a single part of a web breaks,the whole strength of the web increases rather than weakens.Report coauthor Markus Buehler said,“The real strength of the web is not the silk but how its mechanical characters change as things extend it.This character could be used in many areas of life to contain damage to a small area.”
The creation of a typical web uses up a huge amount of a spider’s energy,so it contains a series of characters which stop major repairs being needed.The silk itself has an ability to soften or stiffen(变硬)to bear different types of loads—unlike any other natural or manmade fibers.In tests against three other materials made into similar webs,the spider silk was six times harder to damage when subjected to falling small branches or high winds.
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