15. ________ by the mudslide, the city was cut off from the outside.

　　A. Having struck B. To be struck

　　C. Struck

　　D. Being struck

　　【解析】选C。考查非谓语动词。句意: 由于受泥石流的袭击, 这座城市与外界失去了联系。此处struck by the mudslide相当于状语从句because it was struck by the mudslide。由此可知句子主语the city与strike之间是逻辑上的被动关系, 所以要用过去分词。to be struck作状语表示目的; being struck表示“正在被袭击”。

　　【加固训练】

　　Just as I didn’t know what to do next, it suddenly ________ me how we could improve the situation.

　　A. drewB. struckC. rushedD. pushed

　　【解析】选B。It strikes/struck sb. (that). . . 某人突然想起……。这里指突然想起我们如何改善这种状况。

　　. 阅读理解

　　(2017·怀化模拟)

　　Eating different colored foods can keep you healthy, as well as change your mood and behavior. Here is a list of colors, which can change your life.

　　Blue/Purple

　　Blue is considered to be peaceful and calming and it has the same effect on our health. The blue/purple color in food is due primarily to their anthocyanins which are antioxidants(抗氧化剂)that are particularly heart healthy and may help support healthy blood pressure. Out of all the blue and purple foods available, blueberries are considered to have the highest antioxidant level. An analysis of the latest data from the National Health and Nutrition Examination Study found that people who eat purple and blue fruits and vegetables are at a reduced risk for high blood pressure and are less likely to be overweight.

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