第7题: [单项选择]What can we learn about rivers in Australia A. Rivers run higher than usual. B. Rivers have run out of water. B. Rivers cause little damage. C. Every year rivers overflow. 参考答案:A 答案解析:[听力原文] At least seven people were killed in the floods judged to be the worst to hit southeas
第35题: [单项选择]甲车从A地,乙车和丙车从B地同时出发,相向而行。已知甲车每小时行65公里,乙车每小时行73公里,丙车每小时行55公里。甲车和乙车相遇后,经过15小时又与丙车相遇,那么A、B两地相距( )公里。 A. 10100 B. 13800 C. 10600 D. 14800 参考答案:B 答案解析:[解析] 设从出发到甲乙相遇经过了t小时,三车行驶情况如下图所示: [*] 根据题意可列方程:65×15+55×15+55t=73t,解得t=100; A、B两地的距离应