1 . 科学家和研究人员积极投入到对它们的调查研究中，试图解开金字塔是如何建成的这一世界之谜。（同位语从句）
Scientists and researchers ________________ and study of them, trying to solve the mystery ________________.

2 . 关于金字塔是如何建成的众说纷纭，有人认为是借助运河的水把石料运来的。
There are different opinions on how the pyramids were built. Some people think that the stones ________________.

3 . 许多女孩认为外表不能被忽视。
Many girls ________.

6 . 她的书产生了如此直接和深远的影响，以至于DDT被禁止使用。(such...that...)
Her book had ______________.

7 . 为了创建更干净的环境，禁止每个人乱扔垃圾。
To create cleaner surroundings, ________________.

8 . 虽然人类可以在几天内到达月球，但要穿越极其危险的太阳辐射到达火星则需要耗时数月。
________________ within days, ________________ Mars, travelling through dangerous solar radiation.

9 . 我们看到越来越多的古建筑正在被破坏或拆除。(感官动词＋宾语＋宾语补足语)
We ________________________ or pulled down.

10 . 以汤姆为例，他在成为百万富翁之前负债累累，被好几家公司拒之门外。
________________. He was heavily ________________ before he became a millionaire and ________________ several companies.