题目内容
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提问人：网友f******g
发布时间：2022年3月14日 23:22
[单项选择题]
Which of the following, if true, would most seriously undermine the validity of the model of star formation that is presented in the passage
(A) A star is discovered that emits lower levels of trace ions than those discovered by x-rays of our galaxy’s sun.
(B) A section of the universe is discovered to lack both stars and any sort of interstellar medium.
(C) A galaxy is discovered with a negative rate of star formation.
(D) In one corner of the galaxy, coronal gas is discovered to rarify as it becomes cooler.
(E) A superbubble is found of equal mass to the galaxy surrounding it.
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