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    [伯乐学教育]2025年 信息冲刺(六)6化学(b)答案

1、[伯乐学教育]2025年 信息冲刺(六)6政治(B)试题


3、[伯乐学教育]2025年 信息冲刺(六)6化学(B)试题


How to Be A Good Teenager


Recently, Earth grabbed itself a second moon in the form of a newly discovered asteroid(小行星) named 2024 PT5. Unlike the moon, Earth's primary companion which has accompanied our planet for around 4.5 billion years, this“new mini-moon” will stick around for just two months before it heads back to its home in an asteroid belt following our planet and orbiting the sun.
A team of scientists spotted 2024 PT5 as they routinely monitored newly discovered objects around Earth. “The asteroid paying us a visit belongs to the Arjuna asteroid belt, a secondary asteroid belt made of space rocks that follow the orbit very similar to that of Earth at an average distance to the sun of about 150 million kilometers,” said research lead author Carlos de laFuente Marcos.
Marcos explained that some of these asteroids in the Arjuna asteroid belt can approach Earth at a close range of around 4.5 million kilometers and at low speeds of around 3,540 kilometers per hour. “Under these conditions, one of these asteroids may be captured by Earth's gravity and become a temporary moon of Earth. The asteroid 2024 PT5 will undergo this process for about
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two months,” Marcos added. “It will not follow a full orbit around Earth.”
Mini-moon events come in two flavors. The first is about long episodes during which the asteroid completes one or more revolutions about our planet, with these gravitational engagements (引力作用) lasting one or more years. The second type of episodes is short engagements in which the small body does not complete one full revolution. These temporary captures can last just days, weeks or even a few months. Short mini-moon events are relatively frequent, with several events happening per decade. Long mini-moon events, on the other hand,are rare with Earth experiencing one around every ten or twenty years.
Unfortunately, during its occupation around Earth, 2024 PT5 won't be visible to the vast majority of skywatchers. “The asteroid is too small and dark for typical amateur telescopes.However, it is well within the brightness range of typical telescopes by professional astronomers,”Marcos said.


2、[伯乐学教育]2025年 信息冲刺(六)6地理(B)答案


2、[伯乐学教育]2025年 信息冲刺(六)6英语(B)答案


4、[伯乐学教育]2025年 信息冲刺(六)6生物(B)答案


5、[伯乐学教育]2025年 信息冲刺(六)6生物学(B)答案


1、[伯乐学教育]2025年 信息冲刺(六)6历史(B)试题


2、[伯乐学教育]2025年 信息冲刺(六)6历史(B)答案


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C.二氧化碳既不燃烧，也不支持燃烧，密度比空气大，所以可用来灭火


3、[伯乐学教育]2025年 信息冲刺(六)6生物(B)答案