2011年职称英语考试理工类C级模拟(9)

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