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【填空答案】
hike: v. to walk a long way in the mountains or countryside 徒步旅行，远足
ruleofthumb: a rough method of calculation, based on practical experience（根据实际经验的）粗略的计算方法
gallon: n. ［C］a unit for measuring liquids, equal to 3.785 litres 加仑（等于3.785升）
feature: n. ［C］a part of something that you notice because it seems important, interesting, or typical 特点，特征，特色
creekbed: n. ［C］
downstream: adv. in the direction the water in a river or stream is flowing 顺流而下；向下游方向
booklet: n. ［C］a very short book that usually contains information 小册子
trail: n. ［C］小径
solo: adv. 单独地
unstable: adj. 不牢固的, 不稳定的
rattlesnake: n. ［C］响尾蛇
flashlight: n. ［C］手电筒
【听力原文】
I know you're anxious to get your permits and get started. But there're just a few things I'd like to mention that might help you avoid trouble during your stay. First of all, make sure you carry adequate water. You'll need it if you'rehiking, especially in this heat. A goodrule of thumbis to bring onegallonper person per day this time of year. Don't try to rely on the park's natural springs to supply all your water needs. And please, do not use soap in the springs. It's your responsibility to protect the park's naturalfeatures. For those of you staying beyond the weekend, make sure that you set up camp well away from drycreekbeds. We may get some heavy rainfall, and those creekbeds could quickly become filled with water, and you and all your equipment might end up washeddownstream. When you pick up your permits, you'll also get a park servicesbooklet. It'll tell you everything you need to know about the hikingtrails. They vary in length, of course, but most of them are under five miles—relatively easy day hikes. Remember, if you're hikingsolo, make sure you let someone know you're going and when they can expect you back. And . . . uh, for your own safety, we recommend that you not climb rock faces. A lot of the rock throughout the park is veryunstable. One final word: watch out for poisonous snakes.Rattlesnakeactivity is at its peak this time of year, especially at night. For your own good, we recommend wearing protective clothing and carry aflashlightafter dark.
