2020听力线上活动每日任务—Day167


Day167 练习内容(TPO62-L2)

4. Why are astronomers uncertain as to which of two unnamed galaxies collided with the Cartwheel Galaxy?
A. Each shows evidence typical of a galactic collision
B. Computer simulations show that either one is a possibility
C. Neither one has a bright ring showing the presence of new stars.
D. Both galaxies are at an equal distance from the Cartwheel Galaxy

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