第30题: [单项选择]When did the plane have a trouble A. During her visit in Cairo. B. After she finished her visit. C. When it was preparing to take off. D. After it took off. 参考答案:C 答案解析:本题测试对有关时间的细节内容的理解能力。根据文中“as it taxied down”(飞机起飞前或降落后的滑行)的提示可知,正确答案应为C。