太阳系中哪颗行星的自转方向与其他行星相反?
Which planet in the solar system rotates in the opposite direction to other planets?
金星(Venus)
用三个 5 和一个 1,通过四则运算(加、减、乘、除),怎样得到 24?
Use three 5、5、5 and one 1 to get 24 through four operations (addition, subtraction, multiplication, division).
(5 - 1÷5)×5 = 24
水的三种状态分别是什么?
What are the three states of water?
固态(冰,ice)、液态(水,water)、气态(水蒸气,water vapor)
中国古代神话故事中,后羿射下了几个太阳?
In ancient Chinese mythology, how many suns did Hou Yi shoot down?
9
植物进行光合作用时,吸收的气体是什么?释放的气体又是什么?
What gas do plants absorb and what gas do they release during photosynthesis?
植物吸收二氧化碳(carbon dioxide),释放氧气(oxygen)。
Plants absorb carbon dioxide and release oxygen.
彗星拖着长长的尾巴,这尾巴通常是由什么构成的?
Comets have long tails. What are these tails usually made of?
由尘埃和气体组成(Composed of dust and gas)。
The answer: Composed of dust and gas.
一根绳子对折 3 次后,从中间剪断,这根绳子变成了几段?
After folding a rope in half three times and cutting it in the middle, how many segments are there?
9 段
对折 1 次从中间剪断是 3 段,对折 2 次是 5 段,对折 3 次规律是 2³ + 1 = 9 段
声音在空气中的传播速度大约是多少?(常温下)
What is the approximate speed of sound propagation in air (at normal temperature)?
约 340 米 / 秒(About 340 m/s)
中国明代小说《西游记》中,孙悟空的第一个师傅是谁?
In the Ming Dynasty novel Journey to the West in China, who was Sun Wukong's first master?
菩提祖师(Patriarch Bodhi)
中国古代的 “百家争鸣” 时期,儒家的创始人是谁?
During the "Contention of a Hundred Schools of Thought" period in ancient China, who founded Confucianism?
孔子(Confucius)
太阳系中,哪颗行星的自转周期比公转周期还长?
In the solar system, which planet has a rotation period longer than its revolution period?
金星(Venus),金星的自转周期约为 243 地球日,公转周期约为 224.7 地球日。
The answer: Venus. The rotation period of Venus is about 243 Earth days, and the revolution period is about 224.7 Earth days.
房间里有 10 支点燃的蜡烛,被风吹灭了 3 支,请问最后还剩几支蜡烛?为什么?
There are 10 candles lit in a room. If the wind blows out 3 candles, how many candles are left in the end, and why?
3 支,没吹灭的蜡烛最后燃尽了,剩下的就是被吹灭的 3 支。
人体的呼吸系统由哪些器官组成?(至少说出三个)
Which organs make up the human respiratory system? (Name at least three)
鼻腔(nasal cavity)、咽(pharynx)、喉(larynx)、气管(trachea)、支气管(bronchi)、肺(lungs)等。
古希腊神话中,掌管天空的神是谁?
In ancient Greek mythology, who is the god in charge of the sky?
宙斯(Zeus)
流星通常在大气层的哪一层燃烧殆尽?
In which layer of the atmosphere do meteors usually burn out?
对流层(Troposphere)
日全食发生时,月球处于什么位置?
During a total solar eclipse, where is the Moon located?
月球位于太阳和地球之间,并且三者正好或几乎在同一条直线上(The Moon is between the Sun and the Earth, and the three are exactly or almost in a straight line)。
The Moon is between the Sun and the earth, and the three are exactly or almost in a straight line.
用 1、2、3、4、5 这五个数字组成一个三位数和一个两位数,要使它们的乘积最大,应该怎样组合?
To form the largest possible product from a three-digit number and a two-digit number using the digits 1, 2, 3, 4, and 5, how should they be arranged?
提示:要让高位数字尽量大,并且两个数的差尽量小。
答案:组成 431 和 52
植物细胞与动物细胞的主要区别是什么?(说出两点)
What are the main differences between plant cells and animal cells? (Name two points)
植物细胞有细胞壁(cell wall),动物细胞没有;植物细胞有叶绿体(chloroplast),能进行光合作用,动物细胞一般没有。
The 答案: Plant cells have a cell wall, while animal cells don't; Plant cells have chloroplasts and can carry out photosynthesis, while animal cells generally don't.
古代巴比伦王国的著名法典是什么?
What was the famous code of the ancient Babylonian kingdom?
《汉谟拉比法典》(Code of Hammurabi)
天文单位(AU)通常用来衡量什么距离?
What distance is the astronomical unit (AU) usually used to measure?
太阳与地球之间的平均距离(The average distance between the Sun and the Earth)
第一颗人造地球卫星是由哪个国家发射的?叫什么名字?
Which country launched the first artificial Earth satellite? What was its name?
苏联(The Soviet Union),斯普特尼克 1 号(Sputnik 1)
有 100 个包子,100 个人吃,1 个大人吃 3 个包子,1 个小孩吃 1 个包子,刚好分完,问大人和小孩各有多少人?
There are 100 buns, and 100 people are going to eat them. An adult eats 3 buns, and a child eats 1 bun. How many adults and children are there?
设大人有 x 人,则小孩有(100 - x)人,可得方程 3x + (100 - x) = 100,解得 x = 25,小孩人数为 100 - 25 = 75 人,即大人 25 人,小孩 75 人。
血液中的红细胞有什么功能?
What function does the red blood cell in the blood have?
红细胞的主要功能是运输氧气(transport oxygen),将氧气从肺部输送到全身各处组织细胞。
中国历史上第一次大规模农民起义是什么?
What was the first large-scale peasant uprising in Chinese history?
陈胜、吴广起义(The Uprising of Chen Sheng and Wu Guang)
有一口深 7 米的井,一只蜗牛从井底往上爬,白天向上爬 3 米,晚上下滑 2 米,问蜗牛几天能爬出井口?
There is a well 7 meters deep. A snail climbs up from the bottom. It climbs 3 meters during the day and slips down 2 meters at night. How many days does it take for the snail to climb out of the well?
5 天,前 4 天每天实际向上爬 3 - 2 = 1 米,4 天共爬 4 米,第 5 天白天再爬 3 米就出井口了