新东方网络课堂:2011年职称英语考试理工类C级模拟（9） 31 On a clear night．people can see A 150 stars B hundreds of stars C one thousand stars D more than 14,000 stars 32 Light pollution occurs when A artificial lights illuminate the night sky B the moon lights up the night sky C too many stars are visible in the night sky． D streetlights are turned off 33 Nowadays even suburbs are becoming unsuitable for scientists to do their jobs because A the night sky there is too dark B the once dark areas are also polluted by fights． C these areas are not polluted by chemicals D these areas are less developed 34 How does light pollution affect wildlife? A Animals may go off course B It helps migrating birds find their homes C Animals are afraid to go out after sunset D It helps birds fall asleep 35 The title“Light Night，Dark Stars”means A the night sky is brightly lit up and stars are black B lights appear at night and stars are seen in the dark C city lights at night illuminate stars in the sky D city lights illuminate the night sky．making stars invisible |
