—How can I use this washing machine?
—Well, just refer to the     .

30．One of the greatest      of unhappiness，in my experience，is the difficulty we have in
accepting things as they are．

22. Everyone present at the meeting agreed to stick to the ________that everyone should be treated fairly.

9.The boy has not the ________to lift the heavy box.

9. The rapid development of communications technology is transforming the ________ in which people communicate across time and space.

附加题（选答，共10小题，每道题1分）
1. Not having a good command of English can be a serious ________ preventing you from achieving your goals.

31. A large sum of money has been raised for the ____________ of the poorly-educated children in the mountainous districts.

26. The fantastic passenger ship sank with 2,500 passengers on board on her first _____.

27. The boy gathered all his _____ to stand up.

30. The giant panda is an ________ .