They offered to pay $10 a pound for the biggest biscuit baked by a listener. The response to this competition was tremendous. Before long, biscuits of all shapes and sizes began arriving at the factory.

　　10. They offered to pay $10 a pound for the biggest biscuit baked by a listener.

　　他们愿意以每磅10美元的价钱买下由听众烘制的最大的饼干。

　　语言点1:句子结构分析:baked by a listener是过去分词短语，充当biscuit的后置定语。

　　语言点2:固定搭配:offer to pay…for…的意思是“愿意为…付…”。

　　11. The response to this competition was tremendous.

　　这次竞赛在听众中引起极其热烈的反响。

　　语言点:句子结构分析:to this competition是介词短语，作后置定语，修饰response。

　　12. Before long, biscuits of all shapes and sizes began arriving at the factory.

　　不久，形状各异，大小不一的饼干陆续送到工厂。

　　语言点:arrive at的本意是“到达”，因为“饼干”是不会自己到达的，所以在此引申为“被送到”。