单项选择题According to recent researches,switching time()

A.may save energy.
B.makes no difference.
C.probably wastes energy.
D.improves work proficiency.


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2.单项选择题Operation Lifesavers Inc.is an organization that()

A.was first founded by railroad companies.
B.has designed an online course for drivers.
C.has helped 15,000drivers to get their licenses.
D.collects membership fees from professional truckers.

3.单项选择题()it was raining,many international tourists were having picnics in the woods.

A.In spite of the fact that
B.In spite of that
C.In spite
D.In spite of

5.单项选择题Mr.Venizelos believed that Greece should ()

A.slow down the spending cut
B.carry out its bailout package faster
C.bring down the new government
D.set a more realistic target

6.单项选择题Not until very late that afternoon ()the news that his daughter won the match.

A.did the father get
B.the father got
C.the father did get
D.got the father

7.单项选择题He ()in bed all day long because he had a bad headache.

A.lied
B.lay
C.laid
D.lying

8.单项选择题Why do gas prices not go down as economists predicted?()

A.Because of natural disasters.
B.Because of a series of emergencies.
C.Because of financial crisis.
D.Because of import shortage.

10.单项选择题When we got there we found the window of the hall open and something ().

A.to steal
B.to be stolen
C.stolen
D.stealing