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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】下列句子中,能够体现朱买臣同一侧面的一组是( )
A.
①说《春秋》，言《楚词》，帝甚说之 ② 担束薪，行且诵书
B.
①买臣驻车，呼令后车载其夫妻 ②买臣乞其夫钱，令葬
C.
①少见其绶 ②悉召见故人与饮食
D.
①拜买臣为中大夫，与严助俱侍中 ②我年五十当富贵，今已四十余矣
【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
【单选题】图示沿正立方体的前侧面AB方向作用一力F，则该力【图片】
A.
对轴x,y,z 之矩全等
B.
对轴 x,y,z 之矩全不等
C.
对轴 x,y 之矩相等
D.
对轴 y,z 之矩相等