问题
单项选择题
四显示自动闭塞区段进站色灯信号机显示（），准许列车按规定速度经道岔直向位置进入或通过车站，表示运行前方至少有三个闭塞分区空闲。
A、黄色灯光
B、绿色灯光
C、绿黄色灯光
D、双黄色灯光
答案
参考答案：B
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四显示自动闭塞区段进站色灯信号机显示（），准许列车按规定速度经道岔直向位置进入或通过车站，表示运行前方至少有三个闭塞分区空闲。
A、黄色灯光
B、绿色灯光
C、绿黄色灯光
D、双黄色灯光
参考答案：B
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| According to a team of Dutch scientists, walking backward helps people think more clearly. The study, published in the Washington-based Journal Psychological Science, 1 the ability of 38 men and women to quickly name the colors in which 2 words were displayed. 3 the tests, people were told to step four paces to the left, right, backward or forward. In a group of the trickier trials (ones where the words didn't relate in any way to the colors they were displayed in), performance was the 4 when the subjects stepped four paces backward. "Backward movement 5 to be a very powerful trigger to divide resources," conclude the authors, of Radboud University Nijmegen. "Thus, 6 you meet a difficult situation, stepping backward may increase your capability to 7 with it effectively." In case you were wondering 8 the researchers conducted such a crazy experiment to begin with: It's part of a larger field of study of the way that 9 movements change people's thinking or emotions. Flexing (弯曲) or extending (伸展) the arms, for example (the motions involved in either pulling or pushing) can make 10 more intending to like or dislike something. Pushing and backing away are 11 avoidance actions-such actions are "usually performed in the context of aversive conditions that 12 enhanced control in order to focus on some information and to clear negative results". | ||||
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