A

From this issue, we explore why the Search for Extraterrestrial Intelligence (SETI) Institute hasn't turned up anything since its founding in the 1980s. (See page 30 for more.) We asked our Facebook followers: Do you think that astronomers will find evidence of alien life in your lifetime?

Loran McCormick: 1 think they already have it. Judging by the sudden industrialization, I figure they found something that's probably been here since before humans walked the Earth.

Jens Avery: We may find life, but it may not want anything to do with us. We are not very advanced and can't even get along with each other.

Steven Buhrow: I think the more important question is — will any government ever publicly admit it in our lifetime? I fully believe that we could discover alien life today and the government would simply say the public is not ready for this information.

Jenna Walsh: I think we already see it, but just don't realize what it is. Intelligent alien life probably doesn't want anything to do with the disaster that is Earth at this point, so no doubt they're playing it safe and observing from a safe distance.

Christopher Harvey: By alien life, do you mean intelligent alien life? Then no. It would be extremely hard to find, short of them coming down to Earth. But if you mean unintelligent alien life, like bacteria or single cell, we might.

21. Why did we ask the Facebook followers the question?

A. To question the efficiency of SETI.      B. To confirm the appearance of aliens on earth.

C. To ensure the existence of aliens.       D. To complain about the failure to find aliens.

22. Who doubts the ever visits of aliens to the earth?

A. Loran McCormick                  B. Steven Buhrow

C. Jenna Walsh                      D. Christopher Harvey

23. Where does this text probably come from?

A. An album.                            B. A science fiction.

C. A magazine.                      D. A travel guide.