31. It won’t make much _______ whether you agree or not.

A. difficulty

B. trouble

C. difference

D. matter

32. No one has yet succeeded in explaining the ______ of how life began.

A. cause

B. problem

C. reason

D. puzzle

33. What impressed me most was that they never lost ______.

A. hearts

B. heart

C. their heart

D. their hearts

34. Despite such a big difference in ______ towards what one eats, there is no doubt that people in the west regard the Chinese food as something special.

A. point

B. idea

C. attitude

D. sight

35. As we all know, the government is now making every ______ to set up a harmonious society.

A. effort

B. effect

C. measure

D. performance

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