(单选题)

What conclusion did scientists get which are contrary to their expectation? ( )

A.The Correlation between Galaxy Growth and Dark Matter.

B.rtain galaxies might form stars at a high rate.
C. There were 12 million galaxies spanning from about 400 million years after the Big Bang to present day.

C.The reason why galaxies cease form new stars.

参考答案：B

参考解析：

根据文章末段最后一句But we found the opposite: galaxies of a given size were more likely to form stars at a higher rate.可知实验又发现事实反而是相反的，一些已知星系反而更容易以更快的速度产生新星体，而这是与他们初期设想是相违背的。选项A：星系增长速度和黑物质之间的关系；选项B：有一些星系会以更快速度产生新星体；选项C：大爆炸时代之后至今四亿年有超过一千两百万星系；选项D：星系不再产生新星体的原因。结合文段，可知选项中只有B项表达符合文意。故本题正确答案选B。

知识点：细节题英语阅读理解通用英语