单选题
In the jungle (丛林) you may get hopelessly lost within five minutes after starting. That is (36) you should always carry a compass (指南针). In open country, during the day, you can (37) which way to go by studying the (38) . At night, the stars are sure (39) to direction. In most places the jungle rooftop (顶) is so (40) that it is (41) to see the sun or the stars. (42) you must check your position by the (43) . Keep watchful (注意的,警惕的). Watch the ground in front of you carefully. (44) and listen now and a gain. Avoid (45) , and rest often. In a place (46) is hot and damp, the person who walks fast will soon become (47) . A steady (稳定的), slow step is wisest in the long run. If you (48) your way, don't be scared (恐惧的). Try to (49) how long it has been (50) you were sure of your position. Make a mark (51) you are on a tree. Put the marks on (52) of the trees, so that you'll be a ble to see them from any (53) . Then you can begin retracing your steps (顺原路返回) , knowing that you can always find the place (54) which you started. (55) try to travel through the jungle at night except in an emergency (紧急情况).
【正确答案】
B
【答案解析】句意:这就是你为什么总是要带指南针的原因。
【正确答案】
C
【答案解析】[C] tell在这里是“分辨,辨认”的意思。
【正确答案】
B
【答案解析】注意到前后两句表现为很明显的比较(during the day和at night)。所以空格要和the stars做比较,当然选sun。