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【单选题】
童谣中出现的天体属于
①太阳系 ②地月系 ③银河系 ④河外星系 ⑤总星系 ⑥宇宙
A.
①②③④⑤⑥
B.
①③④⑤⑥
C.
①②④⑤
D.
①③⑤⑥
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【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
相关题目：
【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
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