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.

The button on the side of the electronic book is used ______
A.to make the book more beautiful
B.to turn a light on and off
C.to change what you read
D.to turn the power on and off

________(23)
A.voluntary
B.volunteers
C.volunteering
D.volunteer

________(24)
A.in
B.to
C.into
D.onto

________(26)
A.selected
B.chosen
C.collected
D.elected