We are trying to have a(n) ______________ world. (POLLUTE)
A.Pollutants
B.Unpolluted
C.Pollution
D.Polluted

I am thankful to my teacher who always gives me lots of _______________ to better my knowledge. (COURAGE)
A.discouragement
B.Encouragement
C.Encourage
D.Encouraged

Ba said, Why don’t we stop eating chicken to avoid being infected with bird flu?”
A.Ba suggested that chicken shouldn’t be eaten for fear of bird flu.
B.Ba suggested that chicken shouldn’t be eaten.
C.Ba suggested that chicken shouldn’t be eaten so that they could avoid being infected with bird flu.
D.Both A, B and C

_ “Thank you very much” _ “______________”
A.Are you worried?
B.You’re welcome
C.Not all
D.Nothing

For most households, lighting ____________ for 10 percent to 15 percent of the electricity bill.
A.accounts
B.applies
C.asks
D.prepares

________(42)
A.So that
B.Nevertheless
C.So as
D.Therefore

_______(43)
A.forms
B.qualifications
C.schools
D.licenses

_______(45)
A.good
B.right
C.sure
D.clear

The phrase “are here to stay” in the first paragraph mostly means____
A.“won’t come"
B.“are useless”
C.“are nearby”
D.“won't disappear"?

Which of the following is TRUE according to the passage?
A.Reading today’s books needs a power source.
B.Reading words on computer screens is tiring to the eyes.
C.Books will disappear completely sooner or later.
D.In the future, computers will replace paper books completely.