In 1995,an average of _______ of domestic travelers went on sightseeing in China.
A. 52.4%
B. 54.2%
C. 56.4%
D. 54.6%
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____ you were busy, I wouldn’t have bothered you with questions.
A. If I realized
B. Had I realized
C. I realized
D. As I realized
_____ your timely advice,I would never have known how to go about the work.
A. Unless
But for
C. Except for
D. Not for
He left orders that nothing _____ touched until the police arrived there.
A. should be
B. ought to be
C. must be
D. would be
Which of the following country is not a member of OECD（）
A. Finland
B. Luxembourg
C. Vietnam
D. Italy.
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