参考答案:ABCD
Questions 21 to 22 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
How many vehicles were involved in the accident( ).新闻告诉我们两辆火车相撞,造成事故,而由于撞击所造成的巨大的冲击力又导致三节火车车厢(coaches)飞 离轨道,其中一节车厢还撞上了轨道上方的立交桥(overpass)。
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