20世纪50年代,在外国专家的指导下,我国修建了兰新铁路。兰新铁路在新疆吐鲁番附近的线路如下图所示。读图,完成下列问题。
出发
2
4
6
8
10
目标
42
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When I got home for my birthday from school, no one was at home, and this made me _______.