恒星（star）
Some two thousand million years ago, the mountain on the sun was raised probably because______.A. the star moved away from the sunB. another star happened to come near the sunC. fhe sun and the moon raised the tides on the earthD. a large tidal wave of a star travelled over the surface of the sun
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Some four-star or five-star hotels are also equipped with ( ).A. swimming poolsB. bowling alleysC. saunasD. safety-deposit boxes
恒星有两大显著的现象:第一,恒星的亮度;第二,恒星()。
You are preparing to take another vessel in tow．Which signal indicates，Hawser is made fast ______．A.Firing of a green star signalB.Firing of a red star signalC.An orange smoke signalD.Three white star rockets at 1-minute intervals
According to the fourth paragraph, which of the following is NOT true?A. No nuclear explosion would be triggered inside the star. B. The star would be destroyed completely. C. Much of the star's matter thrown by the explosion would be beyond the black hole's reach. D. The black hole would completely devour the star.
Star Diagnosis诊断仪可以通过哪些方式升级？（）A、通过升级光盘为Star Diagnosis诊断仪升级B、通过USB存储并传输为Star Diagnosis诊断仪升级补丁（Addon）C、通过网络下载为Star Diagnosis诊断仪升级补丁（Addon）D、通过蓝牙传输为Star Diagnosis诊断仪升级补丁（Addon）E、以上升级方式均不正确
恒星的质量只影响恒星的寿命，不影响恒星的光度。
