what ndthrWht teofngnc,aq2。0ne2 eahad he o咖Mmgenering eomwh and tehnolog21.What is the funetion of the first paragraph?A.To expn the requirements of h couB.To introduce the progrm instructorsC.To offern overview of the program.D.To present the contents of the program.2.Which cour you akeyoenyA.Care in Critical Times.B.College Writing.C.Introduction to neuroscienceD.The Economics of Cities23.Whose course should you chooefyore fond of modernorA.Andrea Wright's.B.Martin T.Greenup'sC.Grace Francis's.D.Thomas Shay Hill'sDo you ever get the feeling that you're being watched?Well,you might be rightAccording to a study published in Narre on June 23,astronomers have found that 1,715stars have had a direct view of Earth since humans have been here.The team looked at 331.312 stars within 326 light-years of Parth,with each light-yearequaling 94 trillion kilometers.Out of all those stars,only 1,715 of them coulds Earthwithin the last 5,000 years,with an extra319stars thatwill be able to seeus in the next50years."When I look up at the sky,it looks a bit more amiable because it's like,maybe somebodyis waving."said Lisa Kaltenegger,director of the Carl Sagan Institute at Comell University,USand the study's lead writer.If a planet circling around one of those 1.715 starsis home to advanced life,they couldeasily see that there is life here because of the oxygen on Earth.If that didn'tgivetthe radio waves we have sent out into space would also be an indicator.In fact,human-maderadio waves have already traveled through 75 of the closest sars on Kaltenegger's listWhy haven't we heard from anyone yet,then?It takes a long time for messages to travel between star systems.By the time am高三英语试卷4/12