The writer says one difficulty in proving Shakespeares authorship is that A.the plays were written long ago B.the plays appeared only in print in 1616 C.the actors had changed the author's manuscript D.the author's manuscripts of the plays are no longer available
A.the B.the C.the D.the
【参考答案】
D 参见第四段第一句:“Itistruethatwehavenomanuscriptsoftheplaysast......