1. 请你猜一猜，连一连

⑴a piece of cake                             A. 掌上明珠

⑵hot potato                                  B. 一天一苹果，医生远离我。

⑶the apple of one's eye                       C. 烫手的山芋

⑷An apple a day keeps the doctor away.       D. 孤注一掷

⑸put all eggs in one basket                    E. 小菜一碟