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 lights.

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

第二篇

Shopping at Second-hand Clothing Stores

When 33-year-old Pete Barth was in college， shopping at second-hand clothing stores was just something he did - like changing the tires on his car. He looked at his budget， and decided he could save a lot of money by shopping for clothes at thrift shops.

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