下载APP
【判断题】
我们的太阳的最终命运是约50亿年后演化成一颗白矮星，而我们的银河系将在40亿年左右后与仙女座星系碰撞，并最终约70亿年后融合成一个大椭圆星系.
A.
正确
B.
错误
举报
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Isn’t it surprising that scientists have a better understanding of how many stars there are in the galaxy (银河系) than how many species there are on Earth Their estimates of global species diversity var...
A.
The soil and the deep sea belong to communities that haven’t been fully explored.
B.
It is surprising news wherever new species are discovered in the deep sea.
C.
About 90 million species are believed to live in the deep sea.
D.
A million species in the deep sea have been discovered and named.
【单选题】根据文意，天体物理学家发现的银河系“甘戈特里波”是一种（）。
A.
冰川一样的结构
B.
像“羽毛”一样的气体卷须
C.
连接银河系两条旋臂的固体星系结构
D.
冷一氧化碳气体云