题目

一Lingling doesn’t like Beijing Opera．does she? 一__________，but she loves classical music． A．No，she doesn’t                              B．Yes，she does C．No，she does                                     D．Yes，she doesn't 答案：A下列平末端属于同一种限制酶切割而成的是 A．①③            B．①④          C．②③           D．②④