【GMAT考满分逻辑CR题库】A quark-gluon plasma, a hypothesized phase of q_真题_答案

题目内容

A quark-gluon plasma, a hypothesized phase of quantum chromodynamics of interest to physicists, is supposed to exist at conditions of extremely high temperature or density that never naturally occur on Earth. The conditions engendering quark-gluon plasma were thought to have occurred in the first hundred microseconds or so of the universe. It follows that physicists will never be able to observe quark-gluon plasma.

Which of the following, if true, most seriously weakens the argument above?

A
So-called quark stars are hypothesized to exist of extremely dense matter.
分析该选项
B
The temperature of quark-gluon plasma is believed to be 4 billion degrees Celsius.
分析该选项
C
The existence of the quark-gluon plasma was first hypothesized on the basis of observations by physicists.
分析该选项
D
High temperatures and densities not usually found on Earth can be created in particle accelerators.
分析该选项
E
A quark-gluon plasma is thought to consist of asymptotically free quarks and gluons, which are several of the basic building blocks of matter.
分析该选项

显示答案

正确答案: D

GMAT 考满分题库

题目讨论

最新提问