第4题: [单项选择]王经理从甲地到乙地出差,计划乘坐时速为80千米的汽车出发,可以在预定时间内到达。实际临时决定乘坐时速为140千米的火车出发,结果提前3小时到达。问甲、乙两地相距多少千米 A. 560 B. 580 C. 540 D. 520 参考答案:A 答案解析:[解析] 设预订到达时间为t小时,则可以列方程为80t=140(t-3),解得t=7。则甲乙两地之间的路程为7×80=560千米。
A. special paper B. silver salt C. common salt D. a special metal 参考答案:D 答案解析:[听力原文14-17] Today I will be talking about the invention of the camera and photography.
第26题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}} A. By subway. B. By taxi. C. By bus. D. In their own car. 参考答案:B 答案解析:[听力原文]
W: How are we going to get home It’s so late the buses and subways have all stopped running