题目

A French woman goes to London to see her son. She knows a little English, but can not speak it very well. One day she goes to a shop. She wants to buy a hen for supper. But she can not remember the English word for “hen”. Just then the shop waiter asks her, “Can I help you?” “I want the egg’s mother.” the woman answered. The shop waiter does not understand her and says, “Sorry, we have not any bigger eggs.” Suddenly the woman remembers the word “cock”. “I want the cock’s wife!” she says. This time the shop waiter laughs.【1】The woman goes to London_______.A. to l甲、乙两人都加工a个零件，甲每小时加工20个，如果乙比甲晚工作1小时，且两人同时完成任务，那么乙每小时加工 个零件（用含a的代数式表示）．