问题补充：
On Nov.18th, 1908, three men went up in a balloon. They started early in London. The headman was Auguste Gaudron, and the other two men were Tannar and Maitland. They had a big balloon and they were ready for a long way.
Soon they heard the sea. They were carrying the usual rope, and it was hanging down from the basket of the balloon. At the end of the rope they had tied a metal box. This could hold water, or it could be empty. So they were able to use the box to change the weight of the balloon. The three people were also carrying some bags of sand.
After the sun rose, the balloon went higher. It went up to 3,000 metres, and the air was very cold. The water in the balloon became ice. Snow fell past the men’s basket, and they could see more snow on the ground. The men tried to throw out some more sand; but it was hard. They tried to break the icy sand with their knives, but it was not easy. The work was slow and they were still falling, so they had to drop some whole bags of sand. One of them fell on an icy lake and made a black hole in the ice.
At last they pulled the box into the basket. It was still snowing; so they climbed to get away from the snow. They rose to 5,100 metres! Everything became icy. They were very cold and they decided to land. They came down in Polandheavily but safely. They had travelled 1,797 kilometres from London!
【小题1】Where did they start their travel on Nov.18th, 1908?
【小题2】What was the metal box used for?
【小题3】 Why did they have to drop some whole bags of sand during the travel?
【小题4】 How long did they travel in the end?
【小题5】
What do you think of the three people and their travel? (请自拟一句话作答)
in london
答案：
(答案→)in london
解析：
【小题】从第一段的句子：They started early in London.可知答案是in london
【小题1】从第二段的句子：So they were able to use the box to change the weight of the balloon.可知答案是it was used for changing the weighe of the balioon
【小题1】从第三段的句子：The work was slow and they were still falling, so they had to drop some whole bags of sand.可知答案是the work of throwing some more sand was slow and they were sull falling
【小题1】从第四段的句子：They had travelled 1,797 kilometres from London!
可知答案是1,797 kilometres
【小题1】从文章的内容可以归纳出，这些人很勇敢，很聪明，这次旅行危险又刺激，可知答案是they were very brave and clever,and the trip was dangerous but exciting
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