【简答题】选用适当的词或短语填空。 too much, strange, anxious, mean, picnic 1. What should we take for the ? 2. The granny could not find the way to the hospital. She felt . 3. There is snow outside, so we can't go out for...
【单选题】The Compass The great sea voyages of Europe's 'Age of Discovery,' such as Christopher Columbus's trip to the West Indies in 1492, would have been impossible without the use of a compass. This great de...
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Jade (玉石) finders played an important role in the invention of the 'ladle'. They travelled great distances to look for jade. in order not to lose directions, they would take a 'ladle' with them. The jade connection is important. Lodestone is a hard material—though not as hard as some jade. And the making of a magnetic 'ladle', as well as a highly smooth stone board, would have required great skill. This suggests that the compass was invented by the jade finders of ancient China. However, the making of a 'ladle' was a tough job. Much work needed to shape a piece of lodestone into a ladle would mean much of its natural magnetism (磁性) had been lost. This again meant that only a few 'ladles' could have been produced. Small numbers of ladies produced and growing need for navigation led to a search for ways to produce more compasses, and at the same time, smaller and better compasses. What is the first paragraph mainly about? A.Columbus was a great sailor and discoverer. B.The compass was invented by Columbus. C.The invention of the compass is important in human history. D.Columbus introduced the compass to the West Indies.