mysterious stories. You’re not allowed to take photos there. Reports of aliens and unidentified flying objects (UFOs) are very common. It is the most famous top-secret place on the Earth!Why is Area 51 ……

they are made by aliens. Others call them hoaxes."Crop circles", as the mysterious patterns... interest in this mysterious phenomenon.Strange phenomenonCrop circles were first widely noticed ……

What do you think UFOs and aliens look like? Where are they from? Fill in the blanks.I think aliens... on their head. And they are really smart because they can drive UFOs. A UFO looks like a/an ……

Are UFOs out there?UFO对于人类来说一直是个不解之谜。最近葡萄牙的许多目击者声称他们发现了一个发出耀眼强光的不明飞行物。你认为UFO存在吗？如果存在，它们是什么，来自何方呢？本期主持：北京第四十七中学指导老师：刘淑华Wang Qi:I don't understand UFOs. Sometimes newspapers and TV talk about UFOs ……

third; has B. two thirds; haveC. two third; are D. two thirds; is进阶词汇mysterious adj. 神秘的alien n. 外星... in the sky were believed to have been UFOs!句意：所以，人们认为他们在天空中看到的奇怪物体是不明飞行物!Key: D ……

Objects" (UFOs, 不明飞行物). They were first observed in 1878 in America. But scientists still don't have a clear idea about what they are. UFOs first appeared in newspapers on June 24, 1947. That day ……

believe that the unidentified flying objects, or UFOs, that they are witnessing are alien visitors. Is this a real possibility? Could extraterrestrial life really have visited our planet?Mysterious ……

and ill-informed speculation" surrounding the government and its alleged involvement with UFOs... was detected at the site after the event.'Mile-wide' UFO:Last June, a mysterious flying object was observed ……

FEW people take UFOs – unidentified flying objects (不明飞行物), usually believed to be vehicles... in a position of power who will even talk about UFOs. That’s starting to change, though, reported the Mirror ……

FEW people take UFOs – unidentified flying objects, usually believed to be vehicles (交通工具) carrying... in a position of power who will even talk about UFOs. That’s starting to change, though, reported The Mirror ……

people would say with UFOs. UFO is short for (缩写) Unidentified Flying Object (不明飞行物). But are there really aliens and UFOs out there? What do UFOs look like? Where are they from? We are waiting ……

. You can read about strange sightings in old books. Today we call the things people see UFOs. “UFO” stands for “Unidentified (身份不明的) Flying Object”. What are the UFOs? Where are they from ……

保意识的). It’s very expensive to stay in the hotel. UFOs should never come cheap.21ST ……

with encounters with UFOs, was a testing ground for US spy planes and other high-tech military aircraft. The document, however, does not mention *aliens or UFOs. Declassify指“将……解密”，反义词为classify，指“将……列为 ……

. The festival is to remember this. Every year, there is a fun run and also speeches about UFOs. Have ……