16. Generous public funding of basic science would ________ considerable benefits for the country‘s health， wealth and security.

A) lead to B) result from C) lie in D) settle down

17. In a time of social reform， people‘s state of mind tends to keep ________ with the rapid changes of society.

A) step B) progress C) pace D) touch

18. ________ the calculation is right， scientists can never be sure that they have included all variables and modeled them accurately.

A) Even if B) As far as C) If only D) So long as

19. Harry was ________ by a bee when he was collecting the honey.

A) stung B) stuck C) bitten D) scratched

20. The thief tried to open the locked door but ________.

A) in no way B) in vain C) without effect D) at a loss

16-20 ACAAB

21. ________ seeing the damage he had done， the child felt ashamed.

A) By B) On C) At D) For

22. Remember that customers don‘t ________ about prices in that city.

A) debate B) consult C) dispute D) bargain

23. I hope that you‘ll be more careful in typing the letter. Don’t ________ anything.

A) lack B) withdraw C) omit D) leak

24. This crop does not do well in soils ______ the one for which it has been specially developed.

A) outside B) other than C) beyond D) rather than

25. These two areas are similar ________ they both have a high rainfall during this season.

A) to that B) besides that C) in that D) except that

21-25 BDCBC

26. The tomato juice left brown ________ on the front of my jacket.

A) spot B) point C) track D) trace

27. The committee is totally opposed ________ any changes being made in the plans.

A) of B) on C) to D) against

28. We‘ll visit Europe next year ________ we have enough money.

A) lest B) until C) unless D) provided

29. My father seemed to be in no ________ to look at my school report.

A) mood B) emotion C) attitude D) feeling

30. When he realized the police had spotted him， the man ______ the exit as quickly as possible.

A) made off B) made for C) made out D) made up

26-30 ACDAB