零五网 全部参考答案 亮点给力提优课时作业本答案 2026年亮点给力提优课时作业本九年级英语下册译林版 第43页解析答案
B(2025·连云港)
Saturn(土星) is famous for the beautiful rings around it. Now, it’s getting attention for being even more amazing. Scientists have discovered 128 new moons around Saturn, bringing the planet’s total to 274. A moon is any naturally formed object that moves around a planet. Moons come in different shapes and sizes.
Scientists discovered the moons with a powerful telescope(望远镜), which used to study stars and planets in great detail. Scientists took many photos of areas in space and piled them on top of each other to make the moons appear bright enough to discover.
Most of Saturn’s new moons are small objects, just one or two miles wide—quite different to Earth’s Moon, which is a 2,159 mile-wide ball. These space rocks are in unusual orbits too. They go around Saturn in the opposite direction to its own movement. At between 6.5 million and 18 million miles away from the ringed planet, the newly discovered moons are also further away than Saturn’s biggest moon, Titan.
Why does Saturn have so many moons while Earth only has one? According to scientists, several billion years ago, the giant planet’s gravity attracted some rocks and ice. Over time, some of them crashed against each other, breaking into smaller pieces or coming together to create many small moons.
The new moons were first discovered in 2023 by a team of scientists led by Edward Ashton, and were recently confirmed by the International Astronomical Union(IAU). Saturn now is the planet with the most moons—Jupiter is not far behind with 95. However, Dr Ashton believes this might be the limit for moon discovery. “I don’t think Jupiter will ever catch up,” he said. “With present technology, I don’t think we can do better than what has already been done,” he added.
(
D
)4. What do we know about the new discovery?
A. Newly found moons look the same.
B. Scientist found new moons by accident.
C. Saturn’s rings attract many scientists.
D. 128 new moons were found around Saturn.
(
B
)5. What does “the ringed planet” in Paragraph 3 refer to?
A. Earth.
B. Saturn.
C. Moon.
D. Titan.
(
D
)6. What led to the large number of Saturn’s moons?
A. The size of the planet.
B. The weights of the moons.
C. The orbit of the planet.
D. The crashes of the moons.
(
D
)7. What can we learn from Dr Ashton’s words in the last paragraph?
A. Jupiter will soon catch up with Saturn.
B. Saturn’s new moons might support life.
C. The IAU presented a medal to his team.
D. He is satisfied with their moon discovery.
答案:4. D 5. B
6. D [解析]根据第四段中“the giant planet's gravity attracted some rocks and ice. Over time, some of them crashed against each other, breaking into smaller pieces or coming together to create many small moons”可知,土星的引力吸引了许多岩石和冰体,随着时间的推移,这些物体相互碰撞,破碎成更小的碎片,或者聚集在一起形成了许多小卫星。
7. D [解析]根据最后一段中Dr Ashton说的话“With present technology, I don't think we can do better than what has already been done”可知,Dr Ashton认为,以目前的技术水平,他们已经将研究做到了极致,不太可能再有新的发现了,这表明他对团队的发现感到满意。
解析:
翻译:
B(2025·连云港)
土星因它周围美丽的光环而闻名。现在,它因更加令人惊叹而受到关注。科学家们在土星周围发现了128颗新卫星,使这颗行星的卫星总数达到274颗。卫星是任何围绕行星运行的自然形成的天体。卫星的形状和大小各不相同。
科学家们用一台强大的望远镜发现了这些卫星,这台望远镜过去常被用来非常详细地研究恒星和行星。科学家们拍摄了许多太空区域的照片,并将它们相互叠加,以使卫星显得足够明亮,从而被发现。
土星的大多数新卫星都是小天体,只有一到两英里宽——这与地球的卫星(月球)大不相同,月球是一个直径2159英里的球体。这些太空岩石的轨道也很不寻常。它们围绕土星运行的方向与土星自身的运行方向相反。这些新发现的卫星距离这颗“有环的行星”(土星)在650万到1800万英里之间,而且它们也比土星最大的卫星土卫六离土星更远。
为什么土星有这么多卫星,而地球只有一颗呢?据科学家称,数十亿年前,这颗巨行星的引力吸引了一些岩石和冰块。随着时间的推移,它们中的一些相互碰撞,破碎成更小的碎片,或者聚集在一起形成了许多小卫星。
这些新卫星于2023年首次被爱德华·阿什顿领导的一个科学家团队发现,最近被国际天文学联合会(IAU)证实。现在土星是拥有卫星数量最多的行星——木星以95颗卫星紧随其后。然而,阿什顿博士认为这可能是卫星发现的极限。“我认为木星永远也追不上(土星),”他说。“以目前的技术,我认为我们无法比已经做到的更好了,”他补充道。
( )4. 关于这个新发现,我们知道什么?
A. 新发现的卫星看起来都一样。
B. 科学家们偶然发现了新卫星。
C. 土星的光环吸引了许多科学家。
D. 在土星周围发现了128颗新卫星。
( )5. 第3段中的“the ringed planet”指的是什么?
A. 地球。
B. 土星。
C. 月球。
D. 土卫六。
( )6. 是什么导致了土星卫星数量众多?
A. 行星的大小。
B. 卫星的重量。
C. 行星的轨道。
D. 卫星的碰撞。
( )7. 从最后一段阿什顿博士的话中我们能了解到什么?
A. 木星很快就会赶上土星。
B. 土星的新卫星可能适合生命生存。
C. 国际天文学联合会向他的团队颁发了一枚奖章。
D. 他对他们的卫星发现感到满意。
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