更多"Who Built Giza’s Pyramids(金字塔)
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[单项选择]Who Built Giza’s Pyramids(金字塔)
1 For centuries, the pyramids of Giza have been timeless symbols of Egyptian culture. But who actually built them For years, we did not know for sure. But archeologists(考古学家)recently discovered an ancient village near the pyramids. Close by, there was also a cemetery(墓地)where pyramid builders were buried. From studying these places, archeologists can now confirm that the pyramids were not built by slaves or foreigners. Ordinary Egyptians built them.
2 It took about eighty years to build the pyramids. According to archeologists, about 20,000-30,000 people were involved in completing the task. The workers had different roles. Some dug up the rock, some moved it, and some shaped it into blocks. People also worked on different teams, each with its own name. On a wall in Khufu’s Great Pyramid, for example, a group of workers wrote "Friends of Khufu." Teams often competed to do a job faster.
3 Life for these workers was hard. "We can see that in their skelet
[简答题]At first, the scientists who had built the bomb were pleased that it had helped to end the war.
[判断题]在数量金字塔、生物量金字塔和能量金字塔三种生态金字塔中,只有数量金字塔总是呈典型的下宽上窄的正金字塔形。 ( )
[填空题]生态金字塔通常分为数量金字塔、生物量金字塔和______金字塔三种类型。
[判断题]能量金字塔、生物量金字塔和数量金字塔在所有的生态系统中都表现出正金字塔形。( )
[填空题]生态金字塔反映的是食物链上各营养级之间的数量关系,包括生物量金字塔、数量金字塔和()金字塔。