每个句子中均有一个词或词组用斜体字型，请从四个选项中选择一个与斜体部分意义相近的词或词组代替或解释句中的划线部分。
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
