题目内容：
阅读文章，回答题：Where Have All Our Visitors Gone? Sixty years ago，a man named Kenneth Arnold saw something that people are still_______（1）today—something that changed popular culture for ever．
Flying his plane over mountains in the US state of Washington，he saw a line of strange objects，either crescent—shaped or disc—like，flying_______ （2）the motion of a saucer skimming on water．
The media soon picked up on the story—the Flying Saucers were herel ! Was the earth being．_______ （3）by creatures from another planet?Soon，so many sightings were made that the us military began to_______ （4）． It called these strange objects UFO2s—Unidentified Flying Objects，and that is how they are_______ （5）today．
Military investigations found no evidence of visitors from outer space． But that did not stop the true_______ （6），The military were_______ （7）up，they said.Or_______ （8）it was because the travelers from space were of such superior intelligence that they could hide from the most sophisticated military analysts．
People have always seen strange lights in the sky．In the past these were explained in_______ （9）ways． In a world where religion was less influential and science fiction was popular，signs from god were replaced by visitors from other_______ （10）．
The date of the first UFO signings was also significant． In 1947，World War II had just ended and the_______ （11）war was just beginning． Humanity seemed locked in endless conflicts． Like generations before them，people look_______ （12）the skies for help．But instead of seeking God，they looked for help from super—intelligent aliens with_______ （13） technology． BeIief in UFOs became
the first religion of science．
However，even people who believe in UFOs are not quite sure why they visit the earth．The universe is a big place and it is_______ （14）to assume that there is life somewhere out there．It is possible that aliens have worked out how to travel through space．Yet some people report that they have been taken by aliens and have had experiments_______ （15）on them． Why would anyone travel across half the universe to conduct medical experiments on people living in small towns in the united States? A．looking
B．seeing
C．seeking
D．feeling
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