23. Could you tell me what is the _____ of the experiment?
A. result B. account C. reason D. increase
22. One of the consequences of our planet’s being warning up is a(n) _____ in the number of natural disasters. (2003上海)
A. result B. account C. reason D. increase
21. Air is a _____ of gases.
A. variety B. mixture C. extension D. combination
20. More and more people choose to shop in a supermarket as it offers a great _____ of goods. (2003上海春)
A. variety B. mixture C. extension D. combination
19. There is no _____ to doubt the truth of the statement.
A. occasion B. case C. situation D. background
18. Please remind me of it again tomorrow in _____ I forget.
A. occasion B. case C. situation D. background
17. The collapse of the World Trade Centre has put US economy in a difficult _____. (2003上海春)
A. occasion B. case C. situation D. background
16. --- What is the _____ for your being late?
--- I am sorry I missed the first bus.
A. reason B. excuse C. cause D. explanation
15. --- I am sorry I stepped outside for a smoke. I am very tired.
--- There is no ______ for this while you are on duty. (2003北京)
A. reason B. excuse C. cause D. explanation
14. The manager has got a good _____ to do the business so the company is doing well.
A. idea B. sense C. thought D. thinking
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