Flyingoverseas 版 (精华区)
发信人: bonjovi (bonjovi), 信区: Flyingoverseas
标 题: Building your vocabulary through reading (1)
发信站: 哈工大紫丁香 (2001年07月31日00:09:34 星期二), 站内信件
Building your vocabulary through reading (1)
heroy
Hello, from today, I’d like to present some supplemental articles, most
of which are from the Advanced English Vocabulary published by Barron Publi
shing Company. GRE words are in brackets.
*A Visit to the President
In the winter of 1941,Enrico Fermi and a number of other distinguished s
cientists [IMPORTUNED] President Franklin Roosevelt for authorization to beg
in an all-out effort in atomic energy research.The scientists were alarmed b
y [INCONTROVERTIBLE] evidence of [SURREPTITIOUS] German experiments,and they
asked for speedy approval. Italian-born Enrico Fermi was the the ideal man
to lead the atomic research.Already in 1938 he had won the Nobel Prize for w
ork with radioactive elements and neutron bombardment.Fermi had found a [HAV
EN] from the Fascists(his wife was Jewish) and he knew that if the Germans w
ere the first to develop an atomic bomb it would mean that Hitler could [SUB
JUGATE] the entire world.The international race for atomic [SUPREMACY] was o
n.
*The Ultimate Weapon Takes Shape
Enrico Fermi designed a device which could [EVENTUATE] in a chain reacti
on. It consisted of layers of graphite,alternated with [CHUNKS] of uranium.T
he uranium [EMITTED] neutrons, and the graphite slowed them down.Holes were
left for long cadmium safety rods.By withdrawing those control rods Fermi co
uld speed up the production of neutrons, thus increasing the number of urani
um atoms which would be split ( fission).When the rods were withdrawn to a c
ritical point, the neutrons would be produced so fast that the graphite and
cadmium could not absorb them.In that manner a chain reaction would result.
Slowly, Fermi’s first atomic pile began to grow in a [SUBTERRANEAN] room at
Columbia University.The big question remained – was it [VIABLE]?
* The Squash Court Experiment
As the pile grew, so did the entire project, Fermi moved his materials t
o an abandoned squash court under a football stadium at the University of Ch
icago. His pace accelerated because they were proceeding on the [PREMISE] th
at the Germans were close to atomic success.Six weeks after the pile had bee
n started, its critical size was reached. Three brave young men [JEOPARDIZED
] their lives by [ASCENDING] the pile, ready to cover it with liquid cadmium
if anything went wrong.Almost fifty scientists and several [INCREDULOUS] ob
servers [MOUNTED] a balcony to watch. One physicist remained on the floor; i
t was his job to [EXTRACT] the final cadmium control rod. Unbearable tension
[PERMEATED] the atmosphere. Fermi completed his calculations, waited for a
[PROPITIOUS] moment, and then gave the signal.
* The Italian Navigator Lands
The chain reaction took place precisely as Enrico Fermi had [SURMISED].A
fter twenty eight minutes he [CURTAILED] the experiment, giving the signal t
o replace the control rod.The normally reserved scientists, unable to [REPRE
SS] their excitement, let out a tremendous cheer and gathered around Fermi t
o shake his hand. Although it was time to celebrate, some of the men remarke
d [SOBERLY] that “the world would never be the same again.” On December 2,
1942, the news of Fermi’s achievement was [RELAYED] in a [CRYPTIC] telepho
ne message:
“ The Italian Navigator has reached the New World.”
“And how did he find the natives?”
“Very friendly.”
The Atomic Age was [INCHOLATE] – but truly here!
--
过去太遥远,未来太迷茫。
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