题目

—It is reported on TV this morning that a group of college students went on an exploration in Huangshan，________ in the mountain because of their losing the way.—Yes，I know.Worse still，in order to rescue them，many soldiers went to help，________ one of them to lose his young life. A . trapped；caused B . trapping；causing C . trapped；causing D . trapping；caused 答案：C

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