[名词解释]“六坚持”和“三统一”

[听力原文]11-15
You might wonder where the largest library in the world is. Now, I can tell you the answer, it’s in Washington D. C.. It’s called the Library of Congress. President John Adams started the library in 1800 for members of Congress. He wanted them to be able to read books about law. The first 740 books were bought in England. They were simply stored in the room where Congress met. Then Thomas Jefferson sold Congress many of his own books. He felt Congress should read books on all subjects, not just on law. This idea changed the library for good. Now the library contains 20 million books as well as scores of pictures, movies, globes and machines. Experts in every field work there. Hundreds of people visit every day with all kinds of questions. Many of them get answers right over the phone.

For high-risk propositions yielding high returns, there is nothing to beat the handful companies marketing eternal life. (31) the perceived rewards of being able to come back to life (32) some point, the risks axe huge: Who would want to chance a repeat of disco or Victorian mores, let (33) more meaningless millennium hype in 2999
There are (34) , more immediate risks involved in tile new business of cryonics, (35) is the deep freczing at death of human bodies for preservation and possible revival in future. The biggest problem is that, (36) now, it is impossible to freeze people and bring them back to life.
On the other hand, if cryonics (37) , you were already dead anyway.
(38) it comes from the same root, kryos, the Greek word for cold, cryonics is not to be (39) with the mainstream sciences of cryogenics or cryobiology. These involve freezing of metals or of simple organisms. Metals get st