每個(gè)句子中均有一個(gè)詞或詞組用斜體字型，請(qǐng)從四個(gè)選項(xiàng)中選擇一個(gè)與斜體部分意義相近的詞或詞組代替或解釋句中的劃線部分。

　　21. We want to know his family background.

　　A relationships B members C troubles C income

　　22. The mail was delayed for tow days because of the snow-storm.

　　A held in B held up C held down D held off

　　23. She gave up her job to look after her invalid mother.

　　A quitted B lost C paused D retired

　　24. Do you need anybody to assist you in your work?

　　A inform B aid C direct D instruct

　　25. Of the reptile groups, the snake group was the final one to appear.

　　A. last B best C ugliest D longest

　　26. The room was filled with the scent of flowers.

　　A atmosphere B pot C feature D odor

　　27. He comprehends the theory of relativity.

　　A teaches B learns C investigates D understands

　　28. We propose to furnish our own house according to our own taste.

　　A display B fix C paint D d***rate

　　29. In that organization, they place emphasis on helping one another and on cooperation.

　　A hopes B pressure C stress D demands

　　30. For a beauty competition you need a pretty face and a good figure.

　　A fashion B frame C shape D shade

　　21.A 22.B 23.A 24.B 25.A 26.D 27.D 28.D 29.C 30.C