21. The task before us great courage and perseverance.

　　D. calls for

　　22. A piece of news is one that easily arouses the attention of the readers.

　　C. sensational

　　23. Such kind of cartoons have great not only to children ,but to some adults.

　　D. appeals

　　24. This kind of animal has a wide all over the world.

　　B. distribution

　　25. All of us agree that he has an housewife.

　　A. economical

　　26.People can't the fact that China is still a developing country.

　　A. ignore

　　27.When business is , there is usually an increase in unemployment.

　　D. depressed

　　28.The wild life in Africa is extremely .

　　B. diverse

　　29.One needed when making a cake is flour ; another is sugar.

　　A. ingredient

　　30.The following year parliament voted to the death penalty for murder.

　　A. abolish

　　31.He made a(n) contribution to the discussion.

　　A. positive

　　32.The completion of the transcontinental railroad was an important .

　　C. event

　　33.The plant electricity for the entire city.

　　B. generates

　　34.Ministers are under no to follow the committee's recommendation.

　　B. obligation

　　35.The PLA soldiers were the dam with sandbags in spite of the heavy rain.

　　B. reinforcing

　　36.Princess Anne's wedding was a affair.

　　D. spectacular

　　37.As part of their advertising campaign , they distributed of the new shampoo.

　　D. samples

　　38.She was the grant money to pay her way through graduate school.

　　A. counting on

　　39.You must yourself or they will continue to bully you.

　　B. assert

　　40.Experts say that the complex organizational life of ants should be attributed to .

　　A. instinct