阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

For 4,500 years, the Great Pyramid, or the Pyramid of Khufu, 【小题1】（keep）watching over the Egyptian desert.

In that time, it has suffered the indignities（侮辱）of tomb raiders and archaeologists（考古学家）with gunpowder. 【小题2】 the latest survey of the pyramid's mysteries is far more complicated and 【小题3】（take）a page from particle（粒子）physics. The fact 【小题4】 the particles interact differently with stone from with empty space led the scientists 【小题5】（discover）a previously unknown 100-foot-long void（空间）, 【小题6】（sit）somewhere above the pyramid's Grand Gallery.

“The good news is that the void is there, and the other good news is that this void is very big.”

Now what is it?

“We need the help of other people,” Mehdi Tayoubi, a researcher said. Maybe Egyptologists and 【小题7】（expert）in ancient Egyptian architecture will provide us 【小题8】 some assumptions we can use for imitation（模仿）and to compare with the data we have to find some sort of architectural 【小题9】（explain）for this void. Until then, the newly discovered space will be just one of many 【小题10】（constantly）mysteries of this great wonder of the world.