360和504的最大公约数是（ ）                                                     

A．72

B．24

C．2520

D．以上都不对

Most Americans don’t like to get advice __1_____ members of their family. They get advice from “___2_____ (strange)”. When they need advice, they don’t usually go to people they know. __3______ many of them write letters to newspapers and magazines __4______ give advice on many different subjects ，__5_______ (include) family problems, the use of language, health, cooking, child care, clothes, _6______ even on how to buy a house or a car.

Most newspapers __7_______ (regular) print letters from readers with problems. Along with the letters there are __8_______ written by people who are supposed to know how to solve such problems. Some of these writers are doctors, and _9___________ are lawyers or educators. But two of the most famous writers of advice are women without special __10_________ (train) for this kind of work.