On May 12,1946,Louis Alexander Slotin was on an experiment i

没有义人2022-10-04 11:39:541条回答

On May 12,1946,Louis Alexander Slotin was on an experiment in the
laboratories at Los Alamos with seven other men.Slotin,then aged
thirty-five,was concerned with the assembly of pieces of plutonium (钚),
each of which alone is too small to be dangerous,and which will only
generate (产生) a chain reaction when they are put together.Slotin himself
had tested the assembly of the first experimental bomb which had been
exploded in New Mexico in July,1945.Now,nearly a year later,Slotin was
again doing an experiment of this kind.He was pushing toward one another,
by tiny movements,several pieces of plutonium,in order to ensure that
their total mass (质量) would be large enough to make a chain reaction.
Suddenly,the screwdriver (螺丝起子) slipped,the pieces of plutonium came
too close together and a chain reaction began.This was filling the room
with radioactivity.
Slotin moved at once:he pulled the pieces of plutonium apart with his bare
hands (赤手).This was a real act of suicide,for it exposed him to the
largest amount of radioactivity (放射能).Then he calmly asked his seven
co-workers to mark their precise positions at the time of the accident,in
order that the degree of exposure of each one to the radioactivity could be
fixed.Having done this and called the medical service,Slotin apologized to
the others,and said what turned out to be exactly true:that he thought
that he would die and that they would recover.Slotin had saved the lives of
the seven men working with him by cutting to a minimum the time during which
the assembly of plutonium was giving out radioactive rays.He himself died
of radiation sickness nine days later.6.Slotin was a scientist in the field of ________.
A) mathematics
B) biology
C) physics
D) psychology 7.Why did Slotin pulled with his bare hands?A) Because there was no time to put on gloves.B) Because there was no gloves in the lab.C) Because he didn't like to wear gloves.D) Because he forgot to wear any gloves.8.Which of the following statements is TRUE?A) Slotin was a careless person.B) Before Slotin pulled the pieces of plutonium apart,the room had been
filled with radioactivity.C) Slotin's co-workers rushed to help him.D) Slotin's co-workers were not harmed.9.Slotin's response to the emergency could be best described as
_______.A) hasty and incorrect B) brave and quick C) nervous and slow D) stupid and suicidal 10.Slotin set a good sample in ________.A) morality B) devotion to science C) modesty
D) wisdom

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ljw_321123 共回答了26个问题 | 采纳率92.3%
6.C 物理
7..A 时间紧迫来不及
8.B ( Suddenly,the screwdriver (螺丝起子) slipped,the pieces of plutonium came
too close together and a chain reaction began.This was filling the room
with radioactivity.)
9.B 从赞扬的角度看,勇敢,反映敏捷
10.B 对科学的献身精神
1年前

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