1、Tornadoes,powerful ,destructive wind storms,occur most often in the spring when hot winds ——over flat land encounter heavy,cold air。
A,which to rise B,that rising C,are rising D,rising
2、In pools,goldfish are not just ornamental :since they feed on mosquito larva they are also benefit。
答案是benefit。我不是很明白,请教!!
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这两道题大家有讨论的,你翻一下别的疑问帖子就知道了。
选D,rising 做后置定语修饰hot winds,后面的encounter才是从句的谓语。。。。。
改为benefited,不确定
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