单项选择题According to the passage,we()
A.know nothing about these ancient tombs.B.can′t say just how these pyramids were built.C.know quite well how ancient Egyptians built the pyramids.D.have known a lot about the pyramids.
单项选择题Why did robbers dig into the pyramids?Because()
A.they wanted to steal all the precious things.B.they wanted to study why each stone fits so well.C.they wanted to see if there were any treasures in them as they thought.D.they wanted to know how those huge stones were carried and lifted upwards.
单项选择题Which of the following is true?()
A.All the treasures in the burial rooms have been stolen.B.All the stones used to build the pyramid of Khufu are taller than a person.C.It took 100,000 workers and 20 years to build the pyramid of Khufu.D.The pyramid near Sakara is the largest in Egypt.
单项选择题People today think the pyramids in Egypt()
A.are the most important buildings in the world.B.are in memory of some important people.C.will help ancient Egyptian kings find life after death.D.are reminders of the power enjoyed by the kings.
问答题车道渠化设施包括哪些设施?其中交通锥应该怎样设置?