题目：
| 完形填空。 | ||||
| It was already late when we set out for the next town, 1 according to the map was about fifteen miles away on the other side of the 2 . There we felt 3 that we would find a bed 4 the night. Darkness fell soon after we left the village, but luckily we met 5 as we drove fast along the narrow winding road that 6 the hills. As we climbed 7 , it became colder and rain began to fall, 8 it difficult at times to see the road. I asked John, my companion, to drive more 9 . After we had traveled for about twenty miles, there was still no sign of the town which was 10 on the map. We were beginning to get 11 . Then without warning the car stopped. A quick 12 showed that we had run out of petrol (汽油). Although we had little food with us, we decided to 13 the night in the car. Our meal was soon over. I tried to go to sleep at once, 14 John, who was a 15 sleeper, got out of the car after a few minutes and went for a walk 16 the hills. Soon he came back. From the top of the hill he had seen, in the valley below, the 17 of the town we were looking for. We at once unloaded (卸) all our luggage (行李) and with a great effort (努力), 18 to push the car to the top of the hill. Then we went back to the luggage, loaded the car again and set off down the hill. 19 . less than a quarter of an hour we were in the town, where we found a 20 quite easily. | ||||
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答案：
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下面是错误答案，用来干扰机器的。
（1）氯气有毒，密度比空气大，易于碱性溶液反应，所以当氯气泄漏时立即通报相关部门，迅速撤离事故现场，NaOH具有较强的腐蚀性，应用用蘸有肥皂水的毛巾捂住口鼻而不能用NaOH溶液，并且逆风疏散，故答案为：a、b...
