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What is meant by an "elementary particle"?
什么是‘基本粒子’？
Describe the progression of ideas about what
particles are truly "elementary".
描述关于粒子真正“基本”性质的观念发展过程。
What particles are currently considered to be
the building blocks of all matter?
目前被认为构成所有物质的基本粒子是什么？
Describe the difference in protons and neutrons
in terms of the quarks which make them up.
用夸克来说明质子和中子之间的差异。
No one has seen an isolated quark. Why not?
没有人看到孤立的夸克。为什么不行？
Why are huge, high energy accelerators required to
observe the tiniest of particles?
为什么需要巨大的高能加速器来观测最小的粒子？
What has led to the close cooperation between those
who study the very smallest things (quarks, leptons)
and those who study the very largest things (galaxies,
quasars)?
是什么促成了研究最微小事物（夸克、轻子）的人与研究最宏大事物（星系、类星体）的人之间的紧密合作？
Which two of the four fundamental forces have now
been shown to be "unified"?
四个基本力中有哪两个已经被证明是‘统一’的？
What is meant by "grand unification theories (GUT)"?
‘大统一理论（GUT）’指的是什么？
What evidence do we have that all parts of the
universe are expanding? How is this expansion
related to the measurement of distance to
remote parts of the universe?
我们有哪些证据表明宇宙的各个部分都在膨胀？这种膨胀如何与测量遥远宇宙部分的距离有关？
What is the 3K background radiation? What is its
significance to the modeling of the formation of
the universe?
什么是3K背景辐射？它对宇宙形成模型的意义是什么？
Why is the relative abundance of hydrogen and
helium considered to be such an important part of
the modeling of the universe?
为什么氢和氦的相对丰度被认为是对宇宙建模如此重要的部分？
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