下载APP
【单选题】
10月16日，美国航天局（ ）太空探测器从美国佛罗里达州卡纳维拉尔角空军基地发射升空，开启为期12年的太空旅程，将首次探索在木星轨道内运行的特洛伊小行星群。
A.
辛迪号
B.
玛丽号
C.
朱丽号
D.
露西号
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Unless we spend money to spot and prevent asteroids (小行星) now, one might crash into Earth and destroy life as we know it, say some scientists. Asteroids are bigger versions of the meteoroids (流星) that...
A.
It is very unlikely, but the danger exists.,
B.
Such a collision might occur once every 25 years.
C.
Collisions of smaller asteroids with Earth occur more often than expected.
D.
It’s still too early to say whether such a collision might occur.
【单选题】2011年7月，天文学家发现了一颗直径300米的小行星，它与地球有着相同的公转轨道，并始终在地球前方“打转”。这一发现再次印证了( ) ①自然界是物质的 ②人的意识是物质世界的产物 ③人类社会是物质的 ④世界真正的统一性在于它的物质性
A.
①②
B.
③④
C.
②③
D.
①④
【单选题】Directions: In this part there are four passages, each followed by five questions or unfinished statements. For each of them, there are four suggested answers. Choose the one that you think is the bes...
A.
They are heavenly bodies different in composition.
B.
They are heavenly bodies similar in nature.
C.
There are more asteroids than meteoroids.
D.
Asteroids are more mysterious than meteoroids.