(沙丘) on March 16. Sand dunes are common on Mars. But it is strange for them to form (形成) circles... are common on Mars. But it is strange for them to form (形成) circles. Perfect (完美的) circles like ……

times people reported seeing strange flying objects near fields where crop circles later appeared... of wheat when he discovered something strange.Some of his wheat was lying flat on the ground ……

. And only in last month, people reported 14!Crop circles are strange pictures. They are usually made... it's thealiens(外星人). Sometimes, the night before the circles are found, people see strange bright lights ……

interest in this mysterious phenomenon.Strange phenomenonCrop circles were first widely noticed... night without being noticed.* Strange electronic abnormalities are found within some crop circles ……

in the fields of grain. Most of them are round and in strange patterns. Crop circles first appeared... circles.On May 22, an extraordinary crop circle appeared in a yellow rapeseed (油菜籽) field in Wiltshire ……

(谷物). All of the circles look strange. They are usually as big as a football field.Thousands of crop...不可思议的麦田圈之迷。课件及教案见网站Do you know about crop circles (麦田圈)? Who makes them? Here, Teens will share ……

你知道火星上的秘密吗？WHENsomeone does something strange, we joke that he or she is “from Mars (火星)”. When we hear weird (古怪的) words, we call it “Mars language”. Mars seems mysterious and attractive. Follow ……

Can you find three words in the circles?Can you find three words in the circles?   ……

火星圆月近相望，朗朗夜空共争辉。走向火星人类的"红色"梦想Look up at the sky!与火星亲密接触DID you know that Mars and the earth were... about Mars and the solar system (太阳系), we are about to take an interesting tour on this page.WILL you ……

? This is the question facing people trying to understand the unusual phenomena (现象) of crop circles.Crop circles are strange areas of perfectly round flattened (被打平的) crop that appear in fields of grain ……

). Most of them are in strange and big patterns (图案).Crop circles first appeared in the late 1970s...麦田圈——世界不解之谜。全版词数 630 建议阅读时间 16分钟CROP circles (麦田圈) are coming back! This month, the first crop ……

  Science fiction is fun to read and watch. It can show us different and strange worlds... different and strange worlds. What are these worlds like?   P3-8Wildlife and us  ……

地球上的“火星” 在哪里？ Want to travel to Mars for your summer vacation? Well, it might be hard to do that. But you can find a place like Mars on Earth! It is Chile’s Atacama Desert (智利的阿塔卡马沙漠).Too dry ……

the strange and complex (复杂的) environment of Mars. “We may not even know what we do not know....The challenges were many. They knew little about the strange and complex (复杂的) environment of Mars ……

把红色火星改造成蓝色的"生命天堂"？且看科学家们唇枪舌剑辩得失。THE plan: turn Mars into a blue world with streams and green fields.... It comes as NASA is preparing a multi-billion-dollar Mars research programme."Turning Mars ……