Investigators are still trying to determine the __________ of the accident.A．cau
题型：不详难度：来源：
Investigators are still trying to determine the __________ of the accident.| A．cause | B．problem | C．reason | D．puzzle |
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答案
| A |
解析
| cause起因；problem问题；reason理由；puzzle迷。这里指事故的起因。 |
举一反三
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