from a monster.    Wildlife and humans野生动物与人类Mother Earth wrote a letter to her....  Wildlife and humans野生动物与人类Mother Earth wrote a letter to her children. What did she say?  ……

author’s nightmares. War of the Worlds (《世界大战》):  Martians take over Earth. Can humans take it back? War of the Worlds (《世界大战》):  Martians take over Earth. Can humans take ……

If you remove four letters from this five-letter word, the letter you left with will be pronounced the same as the original word. What is the five-letter word? And what's the letter?The answer ……

Bloodiest killerMosquitoes transmitting countless diseases kill more animals - including humans - than any other animal (or plant) on Earth. ……

Bloodiest killerMosquitoes transmit countless diseases. They kill more animals - including humans - than any other animal (or plant) on Earth. ……

Bloodiest killerMosquitoes transmit countless diseases. They kill more animals - including humans - than any other animal (or plant) on Earth. ……

人) are often friendly to people from Earth. But in HG Well’s famous sci-fi story The War....In children’s books, Martians (火星人) are often friendly to people from Earth. But in HG Well&rsquo ……

月球探秘As the only place outside Earth that humans have set foot on, our moon could be a stepping stone for even greater space exploration. ……

Humans have never been to Mars. But we always want to go there. Why?We are curious about (对……好奇... if there is life or water on Mars. Going to Mars might also help humans find another planet to live ……

gases that make up the air we breathe. This thin layer also helps the Earth from becoming too hot... develop in the lower atmosphere, are driven by heat from the sun, the rotation (旋转) of the Earth ……

gases that make up the air we breathe. This thin layer also helps the Earth from becoming too hot... develop in the lower atmosphere, are driven by heat from the sun, the rotation (旋转) of the Earth ……

century, a series of missions have been carried out to explore the moon – Earth’s only... in landing the first humans on the moon on July 20, 1969. Several decades later, NASA announced its ……

人类为什么要探索火星？Humans have never been (从来没有去过) to Mars. But we always want to go there. Why?We... also want to know if there is life or water on Mars. Going to Mars might also help humans find another ……

;Saturn (土星). A team of scientists from Earth is on the ship, including (包括) Poole and Bowman. ... to a spaceship called Discovery (发现号). It is on its way to Saturn (土星). A team of scientists from Earth ……

for new sources of energy. One source is heat from the Earth. We know that the center of the Earth is very hot. We cannot reach the center of the Earth, but in some places the heat from the Earth’s center ……