专四专八考试

【单选题】Questions 26 to 28 are based on the following news.At the end of the news item, you will be given 15 seconds to answer the questions.
Now, listen to the news.


The blasts were triggered by ______.A．fire
B．mobile phone signals
C．body bomb
D．light

网考网参考答案：B
网考网解析：
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