問題詳情

【題組】42.According to the passage, new stars are formed in spiral galaxies due to
(A)an explosion of gas
(B)the compression of gas and dust
(C)the combining of old stars
(D)strong radio emissions

參考答案

答案：B
難度：適中0.625
統計：A(0),B(5),C(1),D(1),E(0)