[单选题]9. Scientists _________know a lot.A. are supposed toB. suppose toC. are supposing toD. supposed
[单选题]43. _________ scientists have done a lot of research on A (HINl) flu,there are still some cases for further study.A.AsB.OnceC.IfD.Although
In the past ten years a lot of new buildings ______in our city.A. are put upB. h
But do they really mean the same thing?Scientists shaped the history of the term
And who can blame them? In the past two decades, house prices have doubled in re
But is that bad for science? Some scientists have had concerns. When debates in
But is that bad for science? Some scientists have had concerns. When debates in
-The air here is much fresher than before.-Exactly! We a lot of trees i
[单选题]Great changes have been made in family life because of science and industry
[单选题]Great changes have been made in family life because of science and industry